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vitrinekast
2025-03-01 16:38:05 +01:00
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51 changed files with 1476 additions and 1327 deletions
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3
.gitignore vendored
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@ -1,3 +1,4 @@
venv
dist
feedback
feedback
backup

16
app.py
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@ -126,8 +126,9 @@ def get_existing_page(path, slug):
return False
for doc in documents[folder]:
if doc["slug"] == slug:
return doc
if doc:
if doc["slug"] == slug:
return doc
return False
@ -154,6 +155,7 @@ def get_page_data(path, isPreload=False):
page['slug'] = slug
page.filename = filename
page.folder = folder
latex = page.content
if "start_datetime" in page:
@ -166,8 +168,6 @@ def get_page_data(path, isPreload=False):
to='md',
format='md',
extra_args=[
"-N",
"--section-divs",
"--lua-filter=include-files.lua"
])
@ -176,8 +176,6 @@ def get_page_data(path, isPreload=False):
to="html",
format="md",
extra_args=[
"-N",
"--section-divs",
"--citeproc",
"--bibliography=library.bib",
"--csl=apa.csl",
@ -215,10 +213,11 @@ def save_circuit_svg(filepath, outpath, name):
def render_posts(path, output_path=OUTPUT_D):
name = Path(path).stem
for filename in os.listdir(path):
for filename in sorted(os.listdir(path)):
file_path = os.path.join(path, filename)
if filename.endswith(".md"):
print("is md", filename)
page = get_page_data(file_path)
render_single_file(page, file_path, f"{output_path}/{name}", name)
elif os.path.isdir(file_path):
@ -226,6 +225,7 @@ def render_posts(path, output_path=OUTPUT_D):
elif filename.endswith(".svg"):
save_circuit_svg(file_path, f"{output_path}/{name}", filename)
elif Path(filename).suffix in [".jpeg", ".mp3", ".jpg", ".png"]:
os.makedirs(f"{output_path}/{name}", exist_ok = True)
shutil.copyfile(file_path, f"{output_path}/{name}/{filename}")
else:
print("doing nothing with", filename)
@ -243,6 +243,7 @@ def preload_documents():
documents.setdefault(name, [])
for filename in sorted(os.listdir(path)):
print(filename)
cpath = os.path.join(path, filename)
if filename.endswith(".md"):
documents[name].append(get_page_data(cpath, isPreload=True))
@ -288,6 +289,7 @@ def main():
print("rendering posts", path)
render_posts(path)
elif Path(path).suffix == '.md':
print("rendering single", path);
render_single_file(get_page_data(path), path, OUTPUT_D)
elif Path(path).suffix in [".csv"]:
print("not compiling this file!")

56
content/chapters/-1-intro.md
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@ -1,56 +0,0 @@
---
title: "About this guide"
type: Chapter
slug: true
front: false
---
<span template-type="chapter"></span>
<ins>Feedback Thijs: Vertellen over Catu/Repair nights, dat het in Rotterdam is. This field guide is created during and around unrepair nights held at Catu</ins>
<ins>Feedback thijs: who is I</ins>
<ins>How to read the guide! Dus dat het hyperlinks zijn</ins>
---
Hello! You are looking at a printed or web version of the *Field guide to salvaging sound devices*. This guide is currently being created at the (un)repair cafe in Klankschoool[^about-klankschool], and will help you in your "journey"(blergh) of becoming a hardcore hardware salvager.
[^about-klankschool]: A bit about klankschool..
The guide is divided in 4 chapters[^footnotes], each discussing a step in the salvaging process.
1. Gathering hardware
2. Dismantling devices
3. Components to salvage
4. Recipes
[^footnotes]: extra context and additional notes are provided through these footnotes.
## How to hack this guide
In the true spirit of Re-Use/Re-Claim, you are hereby officially invited to make this guide your own. <span class="d-print">Grab a marker and a knife, and correct me where I'm wrong. </span> <span class="d-web"> <kbd>Ctrl</kbd> + <kbd>S</kbd> this web page and host it on your own server, or create a [pull request](theserverisdown.internetissues) for more permanent changes.
## Why salvage?
Buying new (electronic) parts and components is usually cheaper than repairing or salvaging. Even more conveniently, in the online community of DIY synthesizers, it is common practice to share a Mouser Project Cart alongside the schematics, when publishing your project, allowing forkers to buy all parts within just a few clicks. But what if that one ultra important part is no longer produced? Or you’d rather make use of all these other electronic parts that already exist?
This is where *A field guide to salvaging electronic sound devices* comes into play. We’ll go trough the process of finding, unmaking and then remaking again together, using the growing pile of electronic waste[^e-waste], whilst also sometimes talking a bit about the practice of salvaging[^about-salvaging].
[^e-waste]: The pile of e-waste grows at the same rate as technological innovation does, as every product update makes it older brother outdated and read for replacement.
[^about-salvaging]: Salvaging, as Jennifer Gabrys describes it, is not only about the transforming discarded materials into valuable resources, but also about “engaging with the conditions that led to the dispair in the first place” (@instituteofnetworkculturesDepletionDesignGlossary2012). moet hier nog een juiste chapterdoen
### Do It With Others (DIWO)
This field guide is created during and around unrepair nights held at Catu (where you are very much invited to!). Here, we try and figure these electronics out together. Because, electronics is super difficult, and it’s advised to thread these quests together.
<ins>Repair is social, Maintenance and Care tekst (@matternMaintenanceCare2018)</ins>
### Reading the guide
<ins>An invitation to add, substract, reuse and abuse this fieldguide </ins>
<ins>Feedback Thijs mbt bovenstaande tekst: Uitleggen hoe je dat dan zou kunnen doen. </ins>
### A few notes on safety
<ins>Short list of safety things</ins>
- Power supply - always unplug and I don’t mess with power supplies.
- super high voltage hardware
- Don’t drink & solder (@collinsHandmadeElectronicMusic2009)

45
content/chapters/0-gather.md
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@ -1,45 +0,0 @@
---
title: "Gathering"
type: Chapter
slug: true
front: true
---
<span template-type="chapter"></span>
When salvaging components, we are looking for abandoned hardware. Hardware that is still fine on the inside, but no longer deemed as functional by its previous owners[^no-longer-functional] in our consumer culture. These devices can be a literal goldmine[^goldmine] of working parts that could be repurposed, as their hardware probably exceeded their stylistic obsolescence[^stylistic-obsolescence].
[^no-longer-functional]:The spectrum of "still fine" and "no longer deemed as functional" is very wide. Think about printers for which their specific cartridges are no longer produced, Blu-ray players, the E.T. game that was buried, that iPhone 8 with a bad battery, Spotify's "Car Thing", etc.
[^goldmine]: <ins>Something about the metals/minerals to be found</ins>
[^stylistic-obsolescence]: **stylistic obsolescence** The idea that objects can go out of fashion the idea, and therefore needed to be replaced every season (@sterneOutTrash)
I’ve identified 3 strategies in gathering the electronic hardware.
##### 1. Browsing the streets
I feel like with great waste “comes to you”. Keep your eyes open, look around. Actively going on waste walks has not been very fruitful for me. The success is dependent on where you live and the waste regulations and activities[^waste-activities]. Information about waste management should[^should-be-communicated] be communicated via the municipality[^unbinair-waste].
[^unbinair-waste]: <ins>Hier de Unbinare tekst gebruiken mbt hidden waste en de verandering hierin. En ergens heb ik ook een andere tekst gelezen over het verstoppen van waste streams</ins>
[^waste-activities]: In Rotterdam, there are various Whatsapp & Facebook groups exchanging geo loctions for great trash.
[^should-be-communicated]: The municipality waste guide website & app of Rotterdam is not functioning and has not been updated since 2022.
##### 2. Donations from friends & family
As you’ll enthusiastically keep your friends & family in the loop about your salvaging endeavours, you’ll notice the phenomenon of donations. A large portion of our replaced computing devices still reside in our storage units, waiting to be of any value (@gabrysDigitalRubbishNatural2011). hier moet nog eenpagina nummer bij
<ins>Ik zou eigenlijk nog wel meer willen weten over waarom we zoveel devices bewaren</ins>
##### 3. Institutional discards
Institutions where electronic hardware is not their day-to-day business usually[^usually-solution] do not have a systematic solution for their e-waste. Many have a system in place to replace their hardware (printers, computers, etc. ), every 5 years. The remainders are put in storage.
[^usually-solution]: <ins> Is dat zo of denk je dat maar?</ins>
<ins>Hier en donations from friends & family heeft ook nog iets te maken met een soort greenwashing/shift in responsibility, maar dat nog niet helemaal kunnen duiden. </ins>
## Salvaging vs. Hoarding
When inspecting a device for salvage possibilities, I try to imagine what the inside of the device looks like. What kind of components might I find? Are there any motors or moving parts? What kind of material is the device made off? What time period is it from? Which companies manufactured the device and it's parts? Do I see any use for it now? If I don’t expect much, I’ll leave it for the next person to salvage.

59
content/chapters/1-dismantling.md
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@ -1,59 +0,0 @@
---
title: "Dismantling"
type: Chapter
slug: true
front: true
nested: "devices"
---
### Some tools for opening devices
![Illustration of the tools](https://placehold.co/600x400?text=Illustration+of+the+tools)
For this, the following tools are recommended:
- A set of screwdrivers
- A plastic “thing” (e.g. a plectrum, or a dull plastic knife)
- multimeter
-
Dependent on your device, additional specialty tools might be required, such as:
- A hot air gun
- A drill/dremmel/saw to cut away plastic
- Apple's 10k repair tools
## Opening the device
In some cases, product manufacturers provide service manuals[^repair-manual]. These service manuals contain valuable information that can help you to understand the device and to take it apart. Unfortunately, most of the devices I’ve taken apart did not publish their service manuals, meaning we have to figure it out ourselves. Luckily, there are online communities that create their own dismantling guides[^lack].
[^repair-manual]: ![Preview of the manual](/assets/chapters/2/trouble-shoot.png) [This](https://elektrotanya.com/panasonic_rs-768us.pdf/download.html#dl) repair manual that passed the Repair Club contains a schematic, disassembly information, parts list and multiple trouble shouting guides.
[^lack]: [IFixIt](https://ifix.com/) is known for their teirdown guides online, and work in the Right to Repair movement.
Let’s take a look at the device. Do you spot any screws? They might be hidden behind stickers noting you that you are now voiding your warranty[^warranty]. I found it helpful to follow the seams of the material of the device since, especially with plastics, it’s not just screws holding your device together.
[^warranty]: These warranty stickers are not always legally binding. [^warranty-source]. Plus, do you have the receipt for something you found in the bin?
[^warranty-source]: Aragon, N. (2024, December 17). Warranty Void Stickers: Are they legal outside the US? iFixit. https://www.ifixit.com/News/74736/warranty-void-stickers-are-illegal-in-the-us-what-about-elsewhere
If you’ve managed to get a gap in a seam somewhere, stick a thin plastic “thing” in there and carefully push it along the seam. There might be tiny tabs holding the parts together. If the manufacturer really didn’t want you to get in there, they’ve glued it all up, and it is impossible to get in the device without causing permanent damage [^black-box]. A hot air gun could help to dissolve the glue (I’m afraid of melting plastic), or you could cut out the plastic using a knife or drill.
This process really is about finding small gaps in the enclosures[^black-boxism], until you’ve dismantled the entire device. Did you manage? Amazing! You're now looking at all of the inner bits and pieces of your device, made up of all kinds of materials [^inside].
[^black-box]: These glued up personal devices are clearly not made to be opened. They are black boxes by design, designed to become obsolete @hertzZombieMediaCircuit2012. <ins>verder over black boxes (maar miss op een ander punt, bijv. bij een device specifiek)</ins>
[^black-boxism]: slowly removing the outer layer of your black box, revealing the inner mechanisms.
[^inside]: The inside can tell you more about the time the device was made in. For instance, I mostly find aluminum and iron type materials on the inside of older machines.
<ins>Dit verhaal gaan ondersteunen met illustraties/foto's </ins>
<ins>Maybe a suggestion to be discarded, but I would find it fun if the found devices could have a little fictional backstory -- like the airport game: 'I imagine this person (device) did this and this'. On the one hand maybe that's not what you're going for at all, but on the other hand I feel like it could a way to still acknowledge a device's history even when unknown, and in that way exercise the running theme of circulating tech.
</ins>
## Hardware to look out for, or to avoid
In retrospect, i'll write here something about what to look out for and what to avoid.
Something about educated guessing what is inside?
<ins>Feedback: It might be fun and insightful to add a step-by-step example of opening a device. I don't mind the longer text so much, but so far this guide has had a pretty fast pace!</ins>

20
content/chapters/2-component-salvaging.md
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@ -1,20 +0,0 @@
---
title: "Components"
type: Chapter
slug: true
nested: "components"
front: true
---
<span template-type="chapter"></span>
Once you've uncovered the PCB[^PCB] and other loose parts of the device[^parts], we can try to identify the various components. In general PCB's are made with either "trough hole" (THT) or "surface mount" (SMD) components. SMD components are _extremely_ tiny[^tiny] and soldered _on top of_ a PCB. Due to their size, they are really difficult to handle. Their size makes it difficult to read any type of value notation, and actually soldering SMD components is such a frustrating process.[^collapse-OS]. THT components are bigger and have "legs" which are pushed trough holes drilled in the PCB, making them easier to solder & desolder.
[^PCB]: Printed Circuit Board
[^parts]: <ins>Illustration of all parts </ins>
[^tiny]: <ins>how tiny, include an image</ins>
[^collapse-OS]: <ins>reference naar Collapse OS mbt THT vs SMD en de apocalypse.</ins>
There are an almost infinite number of parts[^interchangeable_part] that can be found in electronic devices. I’ve limited the field guide to the parts that I have found, and found relevant to mention, but you’re welcome to update.
[^interchangeable_part]: To research [interchangable parts](https://en.wikipedia.org/wiki/Interchangeable_parts#Late_19th_and_early_20th_centuries:_dissemination_throughout_manufacturing) n.a.v. deze [post](https://northcoastsynthesis.com/news/preferred-values-for-resistors-and-capacitors/)

25
content/chapters/3-recipes.md
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@ -1,25 +0,0 @@
---
title: "Recipes (or Re-cipes, or Re-making)"
type: Chapter
slug: true
front: true
nested: "recipes"
---
<span template-type="chapter"></span>
<ins>Something about how you cannot force material(Collins, N. (2004). Introduction: Composers inside Electronics: Music after David Tudor. Leonardo Music Journal, 14, 1–3. http://www.jstor.org/stable/1513497)</ins>
Rule #17: If it sounds good and doesn’t smoke, don’t worry if you don’t understand it
(@collinsHandmadeElectronicMusic2009)
{{ show grid recipes}}
How to Build a Paper Circuit PCB
Paper circuits use thick paper or cardboard as a base instead of traditional fiberglass PCBs. The conductive traces are made with copper tape, aluminum foil, or conductive ink. Inspired by Ciat-Lonbarde’s designs, this method allows for flexible, handmade circuits that are easy to modify and repair.
To make a paper PCB, start with a sturdy sheet of cardstock. Print or draw the circuit layout onto the surface. Lay down copper tape along the traced paths, ensuring clean connections at intersections. If using aluminum foil, glue it down with conductive adhesive or attach components with eyelets. Soldering directly onto paper is possible but requires low heat and quick contact to avoid burning. For durability, add a layer of clear tape over the traces to prevent oxidation. Finally, secure components with tape or conductive paint, creating a rugged yet flexible circuit ready for experimentation.

11
content/chapters/4-reflection.md
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@ -1,11 +0,0 @@
---
title: "Chapter 5: Reflection"
type: Chapter
slug: true
---
<span template-type="chapter"></span>
### About the narrative of recycling
<ins>Within recycling there is loads of greenwashing. Falling apart (Parks, n.d.)[^parksFallingApartElectronics] text gebruiken hier.</ins>
[^parksFallingApartElectronics]: Parks, L. (n.d.). Falling Apart: Electronics Salvaging and the Global Media Economy.

10
content/chapters/5-bib.md
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@ -1,10 +0,0 @@
---
title: "References (generated)"
type: Chapter
slug: true
front: false
---
<span template-type="bib"></span>
::: {#refs}
:::

248
content/component-inventory.csv
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@ -1,248 +0,0 @@
ID,Amount,Name,Value,type,Date,Where,Mounting-etype
1,1,Electrolytic capacitor,?,Capacitor,25/11/2024,Reel to Reel recorder,Through-Hole
2,1,Electrolytic capacitor,??,Capacitor,25/11/2024,Reel to Reel recorder,Through-Hole
3,1,Electrolytic capacitor,??,Capacitor,25/11/2024,Reel to Reel recorder,Through-Hole
4,1,Electrolytic capacitor,??,Capacitor,25/11/2024,Reel to Reel recorder,Through-Hole
5,1,Electrolytic capacitor,??,Capacitor,25/11/2024,Reel to Reel recorder,Through-Hole
6,1,Film Capacitor,0.033 160,Capacitor,25/11/2024,Reel to Reel recorder,Through-Hole
7,1,Film Capacitor,0.15 100 898,Capacitor,25/11/2024,Reel to Reel recorder,Through-Hole
8,1,Film Capacitor,0.33 63,Capacitor,25/11/2024,Reel to Reel recorder,Through-Hole
9,1,Film Capacitor,0.47 63,Capacitor,25/11/2024,Reel to Reel recorder,Through-Hole
10,1,Film Capacitor,0.47 63 598,Capacitor,25/11/2024,Reel to Reel recorder,Through-Hole
11,1,Film Capacitor,1000 160-89m,Capacitor,25/11/2024,Reel to Reel recorder,Through-Hole
12,1,Electrolytic capacitor,1000 uF,Capacitor,25/11/2024,Reel to Reel recorder,Through-Hole
13,1,Electrolytic capacitor,2500 uF,Capacitor,25/11/2024,Reel to Reel recorder,Through-Hole
14,1,Electrolytic capacitor,25uF,Capacitor,25/11/2024,Reel to Reel recorder,Through-Hole
15,1,Film Capacitor,4700 100-79m,Capacitor,25/11/2024,Reel to Reel recorder,Through-Hole
16,1,Electrolytic capacitor,50uF,Capacitor,25/11/2024,Reel to Reel recorder,Through-Hole
17,1,Film Capacitor,5600 100 79m,Capacitor,25/11/2024,Reel to Reel recorder,Through-Hole
18,1,Film Capacitor,6500-100 89M,Capacitor,25/11/2024,Reel to Reel recorder,Through-Hole
19,1,Film Capacitor,9 47 63 - 259,Capacitor,25/11/2024,Reel to Reel recorder,Through-Hole
20,1,Not sure which type,-,Diode,25/11/2024,Reel to Reel recorder,Through-Hole
21,1,-,3x 5 pin input,Inputs,25/11/2024,Reel to Reel recorder,Through-Hole
22,1,-,1x 5 pin input,Inputs,25/11/2024,Reel to Reel recorder,Through-Hole
23,1,axial-lead,10Ω,resistor,25/11/2024,Reel to Reel recorder,Through-Hole
24,1,axial-lead,75Ω,resistor,25/11/2024,Reel to Reel recorder,Through-Hole
25,1,axial-lead,460Ω,resistor,25/11/2024,Reel to Reel recorder,Through-Hole
26,2,axial-lead,750Ω,resistor,25/11/2024,Reel to Reel recorder,Through-Hole
27,1,axial-lead,1.5kΩ,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
28,2,axial-lead,10kΩ,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
29,1,axial-lead,14KΩ,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
30,1,axial-lead,17kΩ,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
31,3,axial-lead,220Ω,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
32,1,axial-lead,3.2KΩ,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
33,1,axial-lead,4.7KΩ,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
34,1,axial-lead,40kΩ,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
35,1,axial-lead,50kΩ,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
36,1,axial-lead,70KΩ,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
37,2,axial-lead,7kΩ,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
38,2,axial-lead,80kΩ,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
39,2,axial-lead,8KΩ,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
40,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
41,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
42,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
43,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
44,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
45,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
46,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
47,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
48,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
49,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
50,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
51,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
52,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
53,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
54,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
55,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
56,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
57,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
58,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
59,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
60,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
61,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
62,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
63,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
64,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
65,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
66,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
67,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
68,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
69,1,axial-lead,To measure,Resistor,25/11/2024,Reel to Reel recorder,Through-Hole
70,1,NPN Transistor,BC109B,Transistor,25/11/2024,Reel to Reel recorder,Through-Hole
71,2,NPN Transistor,BC107B NPN Transistor,Transistor,25/11/2024,Reel to Reel recorder,Through-Hole
72,1,NPN Transistor,BC183c,Transistor,25/11/2024,Reel to Reel recorder,Through-Hole
73,1,-,S277B,Transistor,25/11/2024,Reel to Reel recorder,Through-Hole
74,1,NPN Transistor,BC183c,Transistor,25/11/2024,Reel to Reel recorder,Through-Hole
75,1,About 17 Unidentified parts, Unidentified, Unidentified,25/11/2024,Reel to Reel recorder,Through-Hole
76,1,FM Tuner,5807M,Chip,12/12/2024,MP3 FM Radio,SMD
77,1,-,7533-1,Chip,12/12/2024,MP3 FM Radio,SMD
78,1,a digital audio processor,PT2314,Chip,12/12/2024,MP3 FM Radio,SMD
79,1,-,A1shb,Transistor,12/12/2024,MP3 FM Radio,SMD
80,1,motor driver for cds,CD5888,Chip,12/12/2024,MP3 FM Radio,SMD
81,1,-,M5677,Chip,12/12/2024,MP3 FM Radio,SMD
82,1,Flash Memory,F20 100GCP,Chip,12/12/2024,MP3 FM Radio,SMD
83,1,-,ATMLH730,Chip,12/12/2024,MP3 FM Radio,SMD
84,1,-,WT1V,Chip,12/12/2024,MP3 FM Radio,SMD
85,1,-,J3Y,Transistor,12/12/2024,MP3 FM Radio,SMD
86,3,8-stage shift-and-store bus register,74HC4094D,Chip,05/12/2024,Telephone,SMD
87,2,-,S2A,Chip,05/12/2024,Telephone,SMD
88,3,-,S1A,Chip,05/12/2024,Telephone,SMD
89,1,-,N187,Transistor,05/12/2024,Telephone,SMD
90,1,photocoupler,Lv7 356T X8,Chip,05/12/2024,Telephone,SMD
91,1, SCHOTTKY BARRIER RECTIFIER,PJ74 SX34,Chip,05/12/2024,Telephone,SMD
92,1,MOSFET,FR220N 711P,Chip,05/12/2024,Telephone,SMD
93,1,-,2A,Chip,05/12/2024,Telephone,SMD
94,1,-,572,Chip,05/12/2024,Telephone,SMD
95,2,Bridge Rectifiers,62 HD04,Chip,05/12/2024,Telephone,SMD
96,1,Flash memory,FLO82A 084,Chip,05/12/2024,Telephone,SMD
97,1,An audio power IC with built-in two channels developed for portable radio cassette tape recorder with power ON / OFF switch,TA8227P,Chip,12/12/2024,MP3 FM Radio,Through-Hole
98,1,PNP Transistor,58550 D 331,Transistor,12/12/2024,MP3 FM Radio,Through-Hole
99,8,signal diode,1N4148,Diode,19/01/2025,Magnet Detector,Through-Hole
100,1,-,LM324N,Chip,19/01/2025,Magnet Detector,Through-Hole
101,1,-,TC4069,Chip,19/01/2025,Magnet Detector,Through-Hole
102,1,PNP Transistor,C9015 c913,Transistor,19/01/2025,Magnet Detector,Through-Hole
103,2,NPN Transistor,C9014,Transistor,19/01/2025,Magnet Detector,Through-Hole
104,1,Unknown things that says 222j,-,-,19/01/2025,Magnet Detector,Through-Hole
105,3,-,10nF,Capacitor,19/01/2025,Magnet Detector,Through-Hole
106,2,-,100nF,Capacitor,19/01/2025,Magnet Detector,Through-Hole
107,1,-,22pF,Capacitor,19/01/2025,Magnet Detector,Through-Hole
108,1,Red LED,-,Output,19/01/2025,Magnet Detector,Through-Hole
109,1,Trimpot,5K,Resistor,19/01/2025,Magnet Detector,Through-Hole
110,1,Trimpot,50k,Resistor,19/01/2025,Magnet Detector,Through-Hole
111,3,axial-lead,10K,Resistor,19/01/2025,Magnet Detector,Through-Hole
112,3,axial-lead,1.2MΩ,Resistor,19/01/2025,Magnet Detector,Through-Hole
113,1,axial-lead,2.2M,Resistor,19/01/2025,Magnet Detector,Through-Hole
114,1,axial-lead,2.2K,Resistor,19/01/2025,Magnet Detector,Through-Hole
115,1,axial-lead,470,Resistor,19/01/2025,Magnet Detector,Through-Hole
116,1,axial-lead,1.5MΩ,Resistor,19/01/2025,Magnet Detector,Through-Hole
117,1,axial-lead,10m,Resistor,19/01/2025,Magnet Detector,Through-Hole
118,1,axial-lead,12M,Resistor,19/01/2025,Magnet Detector,Through-Hole
119,1,axial-lead,100k,Resistor,19/01/2025,Magnet Detector,Through-Hole
120,1,axial-lead,1k,Resistor,19/01/2025,Magnet Detector,Through-Hole
121,1,axial-lead,1.8KΩ,Resistor,19/01/2025,Magnet Detector,Through-Hole
122,1,axial-lead,330k,Resistor,19/01/2025,Magnet Detector,Through-Hole
123,1,axial-lead,1M,Resistor,19/01/2025,Magnet Detector,Through-Hole
124,1,axial-lead,8.2K,Resistor,19/01/2025,Magnet Detector,Through-Hole
125,1,axial-lead,47K,Resistor,19/01/2025,Magnet Detector,Through-Hole
126,2,Dolby-B Noise Processor,NE545B,Chip,19/01/2025,cassette recorder,Through-Hole
127,2,Blue electrolytic capacitor,100uF 10V,Capacitor,19/01/2025,cassette recorder,Through-Hole
128,6,Blue electrolytic capacitor,10 uF / 10V,Capacitor,19/01/2025,cassette recorder,Through-Hole
129,2,Blue electrolytic capacitor,4.7uF / 50V,Capacitor,19/01/2025,cassette recorder,Through-Hole
130,5,bipolar junction transistor (BJT) with an NPN-type configuration. T,C1737 67C,Transistor,19/01/2025,cassette recorder,Through-Hole
131,3,NPN Transistor,C1312 R45F,Transistor,19/01/2025,cassette recorder,Through-Hole
132,2,Unknown diode,-,Diode,19/01/2025,cassette recorder,Through-Hole
133,6,Unknown capacitor,Ceramic capacitor,Capacitor,19/01/2025,cassette recorder,Through-Hole
134,2,Ceramic capacitor,1.5nF,Capacitor,19/01/2025,cassette recorder,Through-Hole
135,2,Ceramic capacitor,1.8nF,Capacitor,19/01/2025,cassette recorder,Through-Hole
136,2,Ceramic capacitor,270 pF,Capacitor,19/01/2025,cassette recorder,Through-Hole
137,2,Ceramic capacitor,680 pF,Capacitor,19/01/2025,cassette recorder,Through-Hole
138,2,metallized polyester capacitor,100nF,Capacitor,19/01/2025,cassette recorder,Through-Hole
139,1,metallized polyester capacitor,47nF,Capacitor,19/01/2025,cassette recorder,Through-Hole
140,4,metallized polyester capacitor,23000uF,Capacitor,19/01/2025,cassette recorder,Through-Hole
141,2,metallized polyester capacitor,330nF,Capacitor,19/01/2025,cassette recorder,Through-Hole
142,1,-,B0338 2526z,Transistor,24/01/2025,cassette recorder,Through-Hole
143,3,-,C1737 67B,Transistor,24/01/2025,cassette recorder,Through-Hole
144,6,-,C1738 69C,Transistor,24/01/2025,cassette recorder,Through-Hole
145,8,-,C1737 69B,Transistor,24/01/2025,cassette recorder,Through-Hole
146,2,-,C1737 68C,Transistor,24/01/2025,cassette recorder,Through-Hole
147,1,-,C1737 65C,Transistor,24/01/2025,cassette recorder,Through-Hole
148,1,-,C1737 67C,Transistor,24/01/2025,cassette recorder,Through-Hole
149,7,-,BC548A P627,Transistor,24/01/2025,cassette recorder,Through-Hole
150,1,-,BC548B P627,Transistor,24/01/2025,cassette recorder,Through-Hole
151,1,-,BC5488 P540,Transistor,24/01/2025,cassette recorder,Through-Hole
152,2,-,BC549C P640,Transistor,24/01/2025,cassette recorder,Through-Hole
153,2,Capacitor,1000uF,Capacitor,24/01/2025,cassette recorder,Through-Hole
154,1,Capacitor,220 mfd 16wv,Capacitor,24/01/2025,cassette recorder,Through-Hole
155,1,Capacitor,2200mfd 16wv,Capacitor,24/01/2025,cassette recorder,Through-Hole
156,3,Capacitor,68MFD 16 WV,Capacitor,24/01/2025,cassette recorder,Through-Hole
157,12,Capacitor,4.7MFD,Capacitor,24/01/2025,cassette recorder,Through-Hole
158,16,Blue Capacitor,4.7,Capacitor,24/01/2025,cassette recorder,Through-Hole
159,4,Bluesss Capacitor,0.47,Capacitor,24/01/2025,cassette recorder,Through-Hole
160,2,Blue Capacitor,15,Capacitor,24/01/2025,cassette recorder,Through-Hole
161,2,Blue Capacitor,22,Capacitor,24/01/2025,cassette recorder,Through-Hole
162,1,Blue Capacitor,33,Capacitor,24/01/2025,cassette recorder,Through-Hole
163,1,Blue Capacitor,47,Capacitor,24/01/2025,cassette recorder,Through-Hole
164,1,Blue Capacitor,68,Capacitor,24/01/2025,cassette recorder,Through-Hole
165,6,Resistor,2.2K,Resistor,26/01/2025,cassette recorder,Through-Hole
166,3,Resistor,27K,Resistor,26/01/2025,cassette recorder,Through-Hole
167,3,Resistor,2.2M,Resistor,26/01/2025,cassette recorder,Through-Hole
168,1,Blue Capacitor,22,Resistor,26/01/2025,cassette recorder,Through-Hole
169,1,Blue Capacitor,20,Resistor,26/01/2025,cassette recorder,Through-Hole
170,2,Resistor,220K,Resistor,26/01/2025,cassette recorder,Through-Hole
171,5,Resistor,22K,Resistor,26/01/2025,cassette recorder,Through-Hole
172,5,Resistor,270K,Resistor,26/01/2025,cassette recorder,Through-Hole
173,157,unidentifief,Resistor,Resistor,26/01/2025,cassette recorder,Through-Hole
174,43,Ceramic capacitor,Capacitor,26/01/2025,cassette recorder,Through-Hole
175,23,Various diodes,Diode,Diode,26/01/2025,cassette recorder,Through-Hole
176,3,coils,Coils,Misc,26/01/2025,cassette recorder,Through-Hole
177,2,Semikron SKB 2,Misc,26/01/2025,cassette recorder,Through-Hole
178,1,Polystyrene Capacitors,270H,Capacitor,26/01/2025,cassette recorder,Through-Hole
179,2,Polystyrene Capacitors,330H,Capacitor,26/01/2025,cassette recorder,Through-Hole
180,2,Polystyrene Capacitors,27n f63 86,Capacitor,26/01/2025,cassette recorder,Through-Hole
181,2,Polystyrene Capacitors,5n6,Capacitor,26/01/2025,cassette recorder,Through-Hole
182,2,Polystyrene Capacitors,4n7,Capacitor,26/01/2025,cassette recorder,Through-Hole
183,2,Polystyrene Capacitors,1n1,Capacitor,26/01/2025,cassette recorder,Through-Hole
184,7,Triangle 6?,Polystyrene Capacitors,Capacitor,26/01/2025,cassette recorder,Through-Hole
185,2,Gloeilampjes,Output,26/01/2025,cassette recorder,Through-Hole
186,3,Fuse,Fuse,Misc,26/01/2025,cassette recorder,Through-Hole
187,3,potentiometer,47K,Resistor,26/01/2025,cassette recorder,Through-Hole
188,1,Stereo Potentiometer,100K,Resistor,26/01/2025,cassette recorder,Through-Hole
189,2,Trimpot,1K,Resistor,26/01/2025,cassette recorder,Through-Hole
190,1,Trimpot,4K,Resistor,26/01/2025,cassette recorder,Through-Hole
191,3,Trimpot,22K,Resistor,26/01/2025,cassette recorder,Through-Hole
192,5,Trimpot,47K,Resistor,26/01/2025,cassette recorder,Through-Hole
193,1,Trimpot,5K,Resistor,26/01/2025,cassette recorder,Through-Hole
194,1,PNP Epitaxial Silicon Transisto,BD136,Transistor,26/01/2025,cassette recorder,Through-Hole
195,6,Electrolytic capacitor,10uF 16V,Capacitor,2/2/2025,V2 Video splitter,Through-Hole
196,39,Electrolytic capacitor,100uF 16V,Capacitor,2/2/2025,V2 Video splitter,Through-Hole
197,20,NPN Bipolar junction transistor. It is,IMBC 547C,Transistor,2/2/2025,V2 Video splitter,Through-Hole
198,12,General purpose NPN transistor ,2N 3904,Transistor,2/2/2025,V2 Video splitter,Through-Hole
199,1,Trimpot,100,Resistor,2/2/2025,V2 Video splitter,Through-Hole
200,2,Trimpot,100K,Resistor,2/2/2025,V2 Video splitter,Through-Hole
201,1,Trimpot,2k2,Resistor,2/2/2025,V2 Video splitter,Through-Hole
202,4,Diode,1n4007,Diode,2/2/2025,V2 Video splitter,Through-Hole
203,6,unknown,unknown,Diode,2/2/2025,V2 Video splitter,Through-Hole
204,1,unknown1,unknown,2/2/2025,V2 Video splitter,Through-Hole
205,1,T7805CT QWT614,Voltage Regulator,2/2/2025,V2 Video splitter,Through-Hole
206,1,7905CT QKX515,Voltage Regulator,2/2/2025,V2 Video splitter,Through-Hole
207,24,axial-lead,1K,Resistor,2/2/2025,V2 Video splitter,Through-Hole
208,4,axial-lead,2.7K,Resistor,2/2/2025,V2 Video splitter,Through-Hole
209,9,axial-lead,330,Resistor,2/2/2025,V2 Video splitter,Through-Hole
210,19,axial-lead,150,Resistor,2/2/2025,V2 Video splitter,Through-Hole
211,23,axial-lead,100,Resistor,2/2/2025,V2 Video splitter,Through-Hole
212,5,axial-lead,100K,Resistor,2/2/2025,V2 Video splitter,Through-Hole
213,1,axial-lead,1.5K,Resistor,2/2/2025,V2 Video splitter,Through-Hole
214,9,axial-lead,270,Resistor,2/2/2025,V2 Video splitter,Through-Hole
215,2,axial-lead,10,Resistor,2/2/2025,V2 Video splitter,Through-Hole
216,9,axial-lead,75,Resistor,2/2/2025,V2 Video splitter,Through-Hole
217,2,axial-lead,10K,Resistor,2/2/2025,V2 Video splitter,Through-Hole
218,1,axial-lead,47K,Resistor,2/2/2025,V2 Video splitter,Through-Hole
219,1,axial-lead,390,Resistor,2/2/2025,V2 Video splitter,Through-Hole
220,1,axial-lead,16K,Resistor,2/2/2025,V2 Video splitter,Through-Hole
221,1,Op Amp,TL082CN,Chip,2/2/2025,V2 Video splitter,Through-Hole
222,1,Op Amp,OPA658P,Chip,2/2/2025,V2 Video splitter,Through-Hole
223,4,Ceramic Capacitor,10nF,Capacitor,2/2/2025,V2 Video splitter,Through-Hole
224,1,Ceramic Capacitor,47pF,Capacitor,2/2/2025,V2 Video splitter,Through-Hole
225,4,Electrolytic capacitor,220uF,Capacitor,2/2/2025,Video/Audio Mixer,Through-Hole
226,12,Electrolytic capacitor,47uF,Capacitor,2/2/2025,Video/Audio Mixer,Through-Hole
227,13,Electrolytic capacitor,1uF,Capacitor,2/2/2025,Video/Audio Mixer,Through-Hole
228,6,Electrolytic capacitor,100uF,Capacitor,2/2/2025,Video/Audio Mixer,Through-Hole
229,4,Op amp,BA15218n 208 328AT,Chip,2/2/2025,Video/Audio Mixer,Through-Hole
230,1,Voltage Comparator,CA311E H9206,Chip,2/2/2025,Video/Audio Mixer,Through-Hole
231,1,Op Amp,072D JRC 2039B,Chip,2/2/2025,Video/Audio Mixer,Through-Hole
232,1,Voltage regulator,79L09 A 218,Undedfined,2/2/2025,Video/Audio Mixer,Through-Hole
233,1,PNP Transistor,106 2N3906 ,Transistor,2/2/2025,Video/Audio Mixer,Through-Hole
234,2,NPN Transistor,C1740,Transistor,2/2/2025,Video/Audio Mixer,Through-Hole
235,3,Electrolytic capacitor,10uF,Capacitor,2/2/2025,Video/Audio Mixer,Through-Hole
236,4,Schuiver,100K,Resistor,2/2/2025,Video/Audio Mixer,Through-Hole
237,1,Schuiver,1k,Resistor,2/2/2025,Video/Audio Mixer,Through-Hole
238,5,Button,-,Input,2/2/2025,Video/Audio Mixer,Through-Hole
239,1,LED,-,OUTPUT,2/2/2025,Video/Audio Mixer,Through-Hole
240,2,-,-,Diode,2/2/2025,Video/Audio Mixer,Through-Hole
241,1,-,-,Diode,2/2/2025,Video/Audio Mixer,Through-Hole
242,11,Video plug,,Input,2/2/2025,Video/Audio Mixer,Through-Hole
243,3,Audio Jack,Input,,2/2/2025,Video/Audio Mixer,Through-Hole
244,1,DC power,Input,,2/2/2025,Video/Audio Mixer,Through-Hole
245,2,Ceramic Capacitor,100nF,Capacitor,2/2/2025,Video/Audio Mixer,Through-Hole
246,1,Ceramic Capacitor,1nF,Capacitor,2/2/2025,Video/Audio Mixer,Through-Hole
247,1,Ceramic Capacitor,220 pF,Capacitor,2/2/2025,Video/Audio Mixer,Through-Hole
Can't render this file because it has a wrong number of fields in line 175.

15
content/thesis.md
View File

@ -1,15 +0,0 @@
---
excerpt: A documentation page
title: A field guide to salvaging sound devices
version: 0.3
layout: index
description: This is the description of the about us page
---
<span template-type="intro"></span>
Dear reader,
This web page includes the WIP version of my thesis. For (limited) information about Klankschool's repair cafe, go to [https://unrepair.klank.school](https://unrepair.klank.school)[^server-down]. The text you'll find below is a draft of the thesis. This thesis will be a field guide to salvaging electronics to make sound devices. This field guide is compact and is meant to be taken "into the wild".
At the I'm leaving notes for myself of things i'd like to include later. These notes can be recognized by their <ins>`<ins>` tags </ins>.
[^server-down]: At the moment, the klank server is down. As far as I understand, there is an issue with the amount of electricity the server is hoarding.

114
library.bib
View File

@ -119,6 +119,19 @@
langid = {american}
}
@misc{calmaWomenWhoMade2025,
title = {The Women Who Made {{America}}'s Microchips and the Children Who Paid for It},
author = {Calma, Justine},
year = {2025},
month = feb,
journal = {The Verge},
urldate = {2025-02-20},
abstract = {The US wants to manufacture chips again --- but there's a dark, overlooked history.},
howpublished = {https://www.theverge.com/features/611297/manufacturing-workers-semiconductor-computer-chip-birth-defect},
langid = {american},
file = {/Users/Rosa/Zotero/storage/6G8IIDT5/article.pdf}
}
@book{collinsHandmadeElectronicMusic2009,
title = {Handmade Electronic Music: The Art of Hardware Hacking},
shorttitle = {Handmade Electronic Music},
@ -128,8 +141,10 @@
publisher = {Routledge},
address = {New York},
isbn = {978-0-415-99609-9 978-0-415-99873-4 978-0-203-87962-7},
langid = {american},
lccn = {ML1092 .C66 2009},
keywords = {Construction,Electronic musical instruments,toppertje}
keywords = {Construction,Electronic musical instruments,toppertje},
file = {/Users/Rosa/Zotero/storage/T5E3CZ4S/Collins - 2009 - Handmade electronic music the art of hardware hacking.pdf}
}
@article{collinsIntroductionComposersElectronics2004,
@ -187,7 +202,7 @@
title = {Ontology {{Of Electronic Waste}}},
author = {Fennis, Maurits},
langid = {english},
keywords = {list,prio:high,summarised},
keywords = {list,summarised},
file = {/Users/Rosa/Zotero/storage/PZ45G9QF/Fennis - Ontology Of Electronic Waste.pdf}
}
@ -229,6 +244,23 @@
file = {/Users/Rosa/Zotero/storage/PZB4D642/Gabrys - 2011 - Digital rubbish a natural history of electronics.pdf}
}
@inproceedings{gegenbauerIPodsAtarisPolaroids2012,
title = {{{iPods}}, {{Ataris}}, and {{Polaroids}}: A Personal Inventories Study of out-of-Use Electronics in {{Swiss}} Households},
shorttitle = {{{iPods}}, {{Ataris}}, and {{Polaroids}}},
booktitle = {Proceedings of the 2012 {{ACM Conference}} on {{Ubiquitous Computing}}},
author = {Gegenbauer, Silke and Huang, Elaine M.},
year = {2012},
month = sep,
pages = {531--535},
publisher = {ACM},
address = {Pittsburgh Pennsylvania},
doi = {10.1145/2370216.2370294},
urldate = {2025-02-25},
isbn = {978-1-4503-1224-0},
langid = {english},
file = {/Users/Rosa/Zotero/storage/47YW9WJG/Gegenbauer and Huang - 2012 - iPods, Ataris, and Polaroids a personal inventories study of out-of-use electronics in Swiss househ.pdf}
}
@book{heimsCyberneticsGroup1991,
title = {The Cybernetics Group},
author = {Heims, Steve J.},
@ -296,6 +328,14 @@
file = {/Users/Rosa/Zotero/storage/HUAVMT2T/Electronic and Experimental Music.pdf}
}
@misc{holzerSchematicScoreUses2011,
title = {Schematic as {{Score}}: {{Uses}} and {{Abuses}} of the ({{In}}){{Deterministic Possibilities}} of {{Sound Technology}}},
author = {Holzer, Derek},
year = {2011},
month = may,
file = {/Users/Rosa/Zotero/storage/ZK479XQZ/web.archive.org-Vague Terrain 19 Schematic as Score.pdf}
}
@book{horowitzArtElectronics2024,
title = {The Art of Electronics},
author = {Horowitz, Paul and Hill, Winfield},
@ -485,6 +525,22 @@
file = {/Users/Rosa/Zotero/storage/XFGEV94M/Principles of Perma-Hybridity.pdf;/Users/Rosa/Zotero/storage/HYCEANK3/principles-of-perma-hybridity.html}
}
@inproceedings{maestriUnderstandingRepairCreative2011,
title = {Understanding Repair as a Creative Process of Everyday Design},
booktitle = {Proceedings of the 8th {{ACM}} Conference on {{Creativity}} and Cognition},
author = {Maestri, Leah and Wakkary, Ron},
year = {2011},
month = nov,
pages = {81--90},
publisher = {ACM},
address = {Atlanta Georgia USA},
doi = {10.1145/2069618.2069633},
urldate = {2025-02-25},
isbn = {978-1-4503-0820-5},
langid = {english},
file = {/Users/Rosa/Zotero/storage/BQJQJ2RJ/Maestri and Wakkary - 2011 - Understanding repair as a creative process of everyday design.pdf;/Users/Rosa/Zotero/storage/JTLM4PHV/Maestri and Wakkary - 2011 - Understanding repair as a creative process of everyday design.pdf}
}
@book{magielsRECYCLEAlsAfval,
title = {{{RECYCLE}}! {{Als}} Afval Grondstof Wordt},
author = {Magiels, Geerdt},
@ -515,7 +571,8 @@
urldate = {2025-01-20},
abstract = {A working guide to the repair of rust, dust, cracks, and corrupted code in our cities, our homes, and our social relations.},
langid = {american},
file = {/Users/Rosa/Zotero/storage/R6T6XGMT/maintenance-and-care.html}
keywords = {to summarise},
file = {/Users/Rosa/Zotero/storage/MPNZ8HWX/Mattern - 2018 - Maintenance and Care.pdf;/Users/Rosa/Zotero/storage/R6T6XGMT/maintenance-and-care.html}
}
@article{matternStepStepThinking2024,
@ -543,7 +600,7 @@
doi = {10.4467/20843860PK.17.030.7800},
urldate = {2025-01-05},
langid = {english},
keywords = {list,prio:high},
keywords = {list},
file = {/Users/Rosa/Zotero/storage/EHFWEG5S/2017 - Media Archeology Lab Experimentation, Tinkering, Probing. Lori Emerson in conversation with Piotr M.pdf}
}
@ -589,6 +646,22 @@
keywords = {list,summarised}
}
@inproceedings{odomUnderstandingWhyWe2009,
title = {Understanding Why We Preserve Some Things and Discard Others in the Context of Interaction Design},
booktitle = {Proceedings of the {{SIGCHI Conference}} on {{Human Factors}} in {{Computing Systems}}},
author = {Odom, William and Pierce, James and Stolterman, Erik and Blevis, Eli},
year = {2009},
month = apr,
pages = {1053--1062},
publisher = {ACM},
address = {Boston MA USA},
doi = {10.1145/1518701.1518862},
urldate = {2025-02-25},
isbn = {978-1-60558-246-7},
langid = {english},
file = {/Users/Rosa/Zotero/storage/32TJFWXX/Odom et al. - 2009 - Understanding why we preserve some things and discard others in the context of interaction design.pdf}
}
@book{oliverosSoftwarePeopleCollected2015,
title = {Software for {{People}}: Collected Writings 1963-80},
shorttitle = {Software for {{People}}},
@ -606,7 +679,7 @@
title = {Falling {{Apart}}: {{Electronics Salvaging}} and the {{Global Media Economy}}},
author = {Parks, Lisa},
langid = {english},
keywords = {list,prio:high,summarised,toppertje},
keywords = {list,summarised,to summarise,toppertje},
file = {/Users/Rosa/Zotero/storage/CAIF3ZWR/Parks - Falling Apart Electronics Salvaging and the Global Media Economy.pdf}
}
@ -654,7 +727,26 @@
publisher = {s.n.},
doi = {10.5167/UZH-110997},
urldate = {2025-01-05},
keywords = {list,prio:high}
langid = {american},
keywords = {list,prio:high,to summarise},
file = {/Users/Rosa/Zotero/storage/DYCDWWC4/Remy and Huang - 2015 - Limits and sustainable interaction design obsolescence in a future of collapse and resource scarcit.pdf}
}
@article{remyTakingNoteMarketing2013,
title = {Taking a Note from Marketing Research in Sustainable {{HCI}}},
author = {Remy, Christian},
year = {2013},
month = may,
journal = {Interactions},
volume = {20},
number = {3},
pages = {12--15},
issn = {1072-5520, 1558-3449},
doi = {10.1145/2451856.2451861},
urldate = {2025-02-25},
abstract = {Sustainability in (Inter)Action provides a forum for innovative thought, design, and research in the area of interaction design and environmental sustainability. The column explores how HCI can contribute to the complex and interdisciplinary efforts to address sustainability challenges. Elaine M. Huang, Editor},
langid = {english},
file = {/Users/Rosa/Zotero/storage/548NRMEI/remy2013.pdf;/Users/Rosa/Zotero/storage/F4CPRFHH/Remy - 2013 - Taking a note from marketing research in sustainable HCI.pdf}
}
@article{richardsDIYElectronicMusic2013,
@ -733,6 +825,11 @@
file = {/Users/Rosa/Zotero/storage/EE6U37KD/Roura et al. - 2021 - Circular digital devices lessons about the social and planetary boundaries.pdf}
}
@article{SalvagedComputing,
title = {Salvaged Computing},
file = {/Users/Rosa/Zotero/storage/MQW7QESH/PDF document.pdf}
}
@misc{selwynWhatMightDegrowth2022,
title = {What Might Degrowth Computing Look Like?},
author = {Selwyn, Neil},
@ -756,7 +853,7 @@
isbn = {978-0-674-02203-4},
langid = {english},
lccn = {609.730 9},
keywords = {list,prio:high},
keywords = {list,to summarise},
file = {/Users/Rosa/Zotero/storage/HC67UT6D/Slade - 2006 - Made to break technology and obsolescence in America.pdf}
}
@ -765,7 +862,7 @@
booktitle = {Residual {{Media}}},
author = {Sterne},
isbn = {0-8166-4471-3},
keywords = {list,prio:high,summarised},
keywords = {list,summarised,toppertje},
file = {/Users/Rosa/Zotero/storage/334DAPWQ/OutwiththeTrash.pdf}
}
@ -795,6 +892,7 @@
month = jul,
urldate = {2025-01-26},
howpublished = {https://web.archive.org/web/20140723013316/http://vagueterrain.net/journal19},
keywords = {to summarise},
file = {/Users/Rosa/Zotero/storage/4BKQP8SX/journal19.html}
}

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# About this guide
*“Figuring out how to make the best possible use out of the millions of devices which already exist.”*[@superquote]
Reading about salvage computing got me excited. It offered a way to keep building while reducing the consequences of constant consumption. This guide is my attempt to document that approach—messy, hands-on, and unapologetically hacked together.
You’re holding (or scrolling through) *A Field Guide for Salvaging Sound Devices*. This guide, created during and around unrepair nights at Catu in Rotterdam[^about-catu], explores the act of salvaging, making, and the (im)practicalities of the process. It’s structured in four chapters, each covering a key step:
1. Gathering hardware
2. Dismantling devices
3. Components to salvage
4. Recipes
[^about-catu]: Catu is a community space where we tinker with electronics, host unrepair nights, and try to make sense of broken things.
## How to Hack This Guide
In the spirit of reuse and reclaiming, this guide is yours to break, rebuild, and rewrite.
<span class="d-print">Got a marker? A knife? Go ahead—correct, annotate, and cut this up.</span>
<span class="d-web">Want to fork it? Hit <kbd>Ctrl</kbd> + <kbd>S</kbd> to save a local copy, host it yourself, or submit a [pull request](theserverisdown.internetissues).</span>
## Why Salvage?
Buying new parts is often cheaper than salvaging. The DIY synth community makes it even easier by sharing Mouser project carts alongside schematics—just a few clicks and all your parts arrive in a neat package. But what if that one crucial part is no longer made? Or you just don’t want to add to the endless cycle of production and waste?
This is where *A Field Guide for Salvaging Sound Devices* comes in. We’ll go through the process of finding, unmaking, and remaking—digging through the growing pile of e-waste[^e-waste] while also reflecting on what it means to salvage[^about-salvaging].
[^e-waste]: E-waste grows at the same rate as technological “innovation.” Every new update makes its older sibling obsolete, ready for disposal.
[^about-salvaging]: As Jennifer Gabrys notes, salvaging isn’t just about reclaiming materials—it’s also about confronting the systems that create waste in the first place (@instituteofnetworkculturesDepletionDesignGlossary2012).
## Do It With Others (DIWO)
This guide was developed during unrepair nights at Catu, where we figure things out together. Because let’s be real—electronics is hard. You don’t have to go it alone. Come by, bring broken things, and let’s make sense of them together.
(Repair is social. See *Maintenance and Care* by Shannon Mattern for more on that[@matternMaintenanceCare2018].)
## Reading the Guide
This guide is an invitation to add, subtract, reuse, and abuse.
Want to modify it? Here’s how:
- **Print version:** Scribble, cut, staple your own addendums.
- **Web version:** Fork it, edit it, host it elsewhere.
## A Few Notes on Safety
Salvaging is fun, but some things can actually kill you. Keep these in mind:
- **Power supplies:** Always unplug before opening. Mains voltage is no joke.
- **High-voltage hardware:** Some capacitors hold a charge even after being unplugged.
- **Soldering safety:** Ventilation is your friend.
- **Don’t drink & solder:** A classic rule from @collinsHandmadeElectronicMusic2009.
---
This is a living document. If something’s unclear, incomplete, or just plain wrong—fix it.

57
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@ -4,53 +4,34 @@ type: Chapter
slug: true
front: false
---
<span template-type="chapter"></span>
<ins>Feedback Thijs: Vertellen over Catu/Repair nights, dat het in Rotterdam is. This field guide is created during and around unrepair nights held at Catu</ins>
<ins>Feedback thijs: who is I</ins>
<ins>How to read the guide! Dus dat het hyperlinks zijn</ins>
When building projects with electronics, salvaging and re-usign electronic components is usually the road less travelled. Even more going down this route, online communities of DIY audio & electronics, it is common practice to publish a schematic alongside a pre-filled shopping cart, making the realisation of your project almost as easy as buying new. But with the growing piles of e-waste[^growing-piles-ewaste] and less availability of the minerals that make up our electronic components, it’s important to investigate alternatives. [deze laatste zin mag meer aansluiten bij wat je verder benoemt][TODO: benoemen e-waste monitor] [TODO: benoemen dat de grote challenge van nu is wat te doen met de piles of e-waste]
---
Hello! You are looking at a printed or web version of the *Field guide to salvaging sound devices*. This guide is currently being created at the (un)repair cafe in Klankschoool[^about-klankschool], and will help you in your "journey"(blergh) of becoming a hardcore hardware salvager.
In *A field guide for salvaging sound devices*, I explore the practical side of salvage computing[^about-salvaging]: is it possible to *live off* (create with) electronic components salvaged in the wild? And what would such a practice look like? The guide is actively developed and tested during so-called *(un)repair nights[^unrepair-night]* at the klankschool[^klank-school], through a series of hangouts, conversations, and other tinkering methodologies[^tinkering-methodologies].
TODO: Toevoegen dat je de lezer ook aanmoedigt om het samen met andere te doen.
[^about-klankschool]: A bit about klankschool..
Repair is inherently social. As Shannon Mattern argues in *Maintenance and Care* (@matternMaintenanceCare2018), repair practices are not just about fixing things but about fostering connections, sharing knowledge, and creating resilient communities. I encourage you to engage with this guide alongside others—whether that means working with friends, joining a repair group, or sharing your own salvaging insights. [Feedbac: before this you didn't say anything yet at all about repair, so this is a bit sudden.]
The guide is divided in 4 chapters[^footnotes], each discussing a step in the salvaging process.
[^about-salvaging]: As Jennifer Gabrys describes, salvaging is not just about transforming discarded materials into valuable resources, but also about _“engaging with the conditions that led to the dispair in the first place”_ (@instituteofnetworkculturesDepletionDesignGlossary2012).
1. Gathering hardware
2. Dismantling devices
3. Components to salvage
4. Recipes
[^unrepair-night]: TODO: Include information about how the reader could join
[^footnotes]: extra context and additional notes are provided through these footnotes.
[^klank-school]: Klankschool is a Rotterdam-based community of sound practicioners, that (were at least planning to) share a space to collaborate and educate together. [TODO: betere omschrijving]
## How to hack this guide
In the true spirit of Re-Use/Re-Claim, you are hereby officially invited to make this guide your own. <span class="d-print">Grab a marker and a knife, and correct me where I'm wrong. </span> <span class="d-web"> <kbd>Ctrl</kbd> + <kbd>S</kbd> this web page and host it on your own server, or create a [pull request](theserverisdown.internetissues) for more permanent changes.
[^tinkering-methodologies]: TODO: Tinkering methodologies is coming from “Zombie Media: Circuit Bending Media Archaeology into an Art Method” although I don’t really know what to add about that here, even though I do want to mention it.
## Why salvage?
Buying new (electronic) parts and components is usually cheaper than repairing or salvaging. Even more conveniently, in the online community of DIY synthesizers, it is common practice to share a Mouser Project Cart alongside the schematics, when publishing your project, allowing forkers to buy all parts within just a few clicks. But what if that one ultra important part is no longer produced? Or you’d rather make use of all these other electronic parts that already exist?
This is where *A field guide to salvaging electronic sound devices* comes into play. We’ll go trough the process of finding, unmaking and then remaking again together, using the growing pile of electronic waste[^e-waste], whilst also sometimes talking a bit about the practice of salvaging[^about-salvaging].
[^e-waste]: The pile of e-waste grows at the same rate as technological innovation does, as every product update makes it older brother outdated and read for replacement.
[^about-salvaging]: Salvaging, as Jennifer Gabrys describes it, is not only about the transforming discarded materials into valuable resources, but also about “engaging with the conditions that led to the dispair in the first place” (@instituteofnetworkculturesDepletionDesignGlossary2012). moet hier nog een juiste chapterdoen
### Do It With Others (DIWO)
This field guide is created during and around unrepair nights held at Catu (where you are very much invited to!). Here, we try and figure these electronics out together. Because, electronics is super difficult, and it’s advised to thread these quests together.
<ins>Repair is social, Maintenance and Care tekst (@matternMaintenanceCare2018)</ins>
### Reading the guide
<ins>An invitation to add, substract, reuse and abuse this fieldguide </ins>
<ins>Feedback Thijs mbt bovenstaande tekst: Uitleggen hoe je dat dan zou kunnen doen. </ins>
### Using this guide
In the true spirit of Re-Use/Re-Claim, you are hereby officially invited to make this guide your own. Print [^shortcut-print] your own version, <span class="d-print">Grab a marker and a knife, and correct me where I'm wrong. </span> <span class="d-web"> <kbd>Ctrl</kbd> + <kbd>S</kbd> this web page and host it on your own server, or create a [pull request](theserverisdown.internetissues) for more permanent changes.
[^shortcut-print]: <kbd>Ctrl</kbd> + <kbd>P</kbd> to print this document
### A few notes on safety
<ins>Short list of safety things</ins>
This guide is about diving headfirst into tinkering with electronics—but before we start swallowing batteries[TODO make this example less weird], let’s go over some basic safety measures & disclaimers.
- Power supply - always unplug and I don’t mess with power supplies.
- super high voltage hardware
- Don’t drink & solder (@collinsHandmadeElectronicMusic2009)
I am by no means and expert in electronics. When I write about how things work, please take it with a grain of salt. It's 'my' logic, and i'm sure it's full of incorrect assumptions. If you have improvements, feel free to reach out, or create a pull request with your improvements.
To keep things safe and prevent shocks, **awlways disconnect the battery or power supply** when working on a device. Work thoughtfully and carefully and you'll be fine. If you're not sure, ask a friend, or ask the internet.
[^short]: TODO: what is a short
TODO: include iets over de sound devices zelf. Dus dat je sound devices wil maken die gemakkelijker na te maken zijn, maar ook dat je ze niet te moeilijk moet maken.en dus shit als tuning e.d. achterwegen laat.

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@ -42,4 +42,9 @@ Institutions where electronic hardware is not their day-to-day business usually[
## Salvaging vs. Hoarding
When inspecting a device for salvage possibilities, I try to imagine what the inside of the device looks like. What kind of components might I find? Are there any motors or moving parts? What kind of material is the device made off? What time period is it from? Which companies manufactured the device and it's parts? Do I see any use for it now? If I don’t expect much, I’ll leave it for the next person to salvage.
When inspecting a device for salvage possibilities, I try to imagine what the inside of the device looks like. What kind of components might I find? Are there any motors or moving parts? What kind of material is the device made off? What time period is it from? Which companies manufactured the device and it's parts? Do I see any use for it now? If I don’t expect much, I’ll leave it for the next person to salvage.
Hier kun je nog iets zeggen over die paper met waaarom mensen dingen bewaren @gegenbauerIPodsAtarisPolaroids2012
According to the permacomputing[^permacomputing] wiki, scavenge friendly parts are “*are available by the billions in landfills.*”[@SalvageComputing], so there must be loads.

44
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@ -1,25 +1,45 @@
---
title: "Recipes (or Re-cipes, or Re-making)"
title: "Recipes for reuse"
type: Chapter
slug: true
front: true
nested: "recipes"
---
<span template-type="chapter"></span>
Hopefully, you’ve salvaged a variety of components by now, and we can start to actually build some sound with them. In this chapter you'll find a bunch of recipes; the starting points for sound devices. These modular recipes can be used standalone or connected together into a bigger system. This modularity makes problem-solving slightly easier[^easier], and you can pick and choose your modules based on your salvaged inventory.
<ins>Something about how you cannot force material(Collins, N. (2004). Introduction: Composers inside Electronics: Music after David Tudor. Leonardo Music Journal, 14, 1–3. http://www.jstor.org/stable/1513497)</ins>
[^easier]: Still a headache! But now you only have to triple check a handful of components, instead of 120
Every recipe contains a paper circuit[^paper-circuit-ciat] to print[^printing]. These circuits are the blueprint of your device, between a schematic and a industrial PCB. The biggest advantage of using paper, apart from being able to solder the connections of your components right on top of the circuit, is that it is paper. You can take notes, draw lines and adjust the schematic as you go.
[^printing]: check for scaling issues!
[^paper-circuit-ciat]: I've copied the method from Synthesizer builder Ciat Lonbarde, who used paper circuits to prototype and to distribute circuits and ideas for free @blasserStoresMall2015 .
### Assembling the circuit[^assembly]
1. Cut out the circuit and fold it in half, creating a two sided print
2. Gather the components listed in the "Bill of Materials" (BOM)
3. Populate the first components by pinning the legs trough the paper in their designated areas. Keep an eye on the orientation[^orientation]. Start small (resistors) then move to larger parts.
4. Create the connections according circuit by soldering the legs together. I've found bare copper wire is the fastest.
5. Repeat until all components are in place!
6. Test & triple-check all connections [^triple-check].
[^assembly]: <ins>something about tools</ins>
[^orientation]: Some capacitors, LED's and other components all have a specific polarity/orientation.
[^triple-check]: With salvaged components you'll have a limited supply. Test to prevent component loss.
There is no need to understand every single component on each recipe [^no-need], but try to follow the connections on the circuit. Which road is the audio signal taking? This will help you a lot with troubleshooting.
[^no-need]:Rule #17 from Handmade Electronic Music states "If it sounds good and doesn’t smoke, don’t worry if you don’t understand it." @collinsHandmadeElectronicMusic2009.
Rule #17: If it sounds good and doesn’t smoke, don’t worry if you don’t understand it
(@collinsHandmadeElectronicMusic2009)
If you want to build a modular, my advice is not to do it if you want to have any friends, it takes too much time. > https://web.archive.org/web/20151011091344/http://www.irfp.net/Projects/machines/Modular.html
{{ show grid recipes}}
How to Build a Paper Circuit PCB
Paper circuits use thick paper or cardboard as a base instead of traditional fiberglass PCBs. The conductive traces are made with copper tape, aluminum foil, or conductive ink. Inspired by Ciat-Lonbarde’s designs, this method allows for flexible, handmade circuits that are easy to modify and repair.
To make a paper PCB, start with a sturdy sheet of cardstock. Print or draw the circuit layout onto the surface. Lay down copper tape along the traced paths, ensuring clean connections at intersections. If using aluminum foil, glue it down with conductive adhesive or attach components with eyelets. Soldering directly onto paper is possible but requires low heat and quick contact to avoid burning. For durability, add a layer of clear tape over the traces to prevent oxidation. Finally, secure components with tape or conductive paint, creating a rugged yet flexible circuit ready for experimentation.
## Safety notes
- **Audio can be surprisingly loud**. Use small speakers (never headphones!) you wouldn’t miss if they break, and keep your hand on the volume dial when plugging in your sound device for the first time
- **Use batteries** plugging into a wall (120V) can be incredibly dangerous. When making changes
- - **watch that smell** “magic smoke” has a certain smell. Unplug

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@ -1,8 +0,0 @@
---
title: 555 Timer oscillator
source: Horowitz, P., & Hill, W. (2024). The art of electronics (Third edition, 20th printing with corrections). Cambridge University Press.
type: oscillator
schematic: "/assets/recipes/555-timer.png"
---
Iets over de 555 timer

13
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@ -0,0 +1,13 @@
---
title: Kick
BOMTable: true
order: 3
shortDescription:
"A keyboard to play your oscillator"
BOM:
- type: Misc
label: "A completely clean PCB"
- type: Resistor
label: "Multiple resistors between 1K and 100K"
---

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@ -0,0 +1,13 @@
---
title: PCB Keyboard
BOMTable: true
order: 3
shortDescription:
"A keyboard to play your oscillator"
BOM:
- type: Misc
label: "A completely clean PCB"
- type: Resistor
label: "Multiple resistors between 1K and 100K"
---

24
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@ -1,7 +1,17 @@
"Reference","Value","Datasheet","Footprint","Qty","DNP"
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"C1,C2","10uF","","Capacitor_SMD:CP_Elec_4x5.3","2",""
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"J2","GND","~","MountingHole:MountingHole_2.2mm_M2_DIN965_Pad","1",""
"J3","-V","~","MountingHole:MountingHole_2.2mm_M2_DIN965_Pad","1",""
"R1,R2","10","","PCM_4ms_Resistor:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal","2",""
"Reference","Value","Qty"
"Q1","2N3906","1"
"C1","10uF","1"
"D1","LED","1"
"J1","AudioJack2","1"
"J2","18V","1"
"J3","GND","1"
"R1","1k","1"
"R2","100K","1"
"RV1","10K","1"
BOM:
- type: Transistor
count: 1
value: "2N3906"
alternative: "Apperantly there are loads of alternatives but its trail and error"
Can't render this file because it has a wrong number of fields in line 13.

1361
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66
src/content/recipes/SingleTransistorOsc/index.md
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@ -1,33 +1,65 @@
---
title: Power Supply
title: Single Transistor Oscillator
BOMTable: true
order: 2
shortDescription:
"Create a power supply for your future circuits"
"This unreliable schematic creates a tone!"
BOM:
- type: Transistor
count: 1
value: "2N3906"
alternative: "2N4401, SS9014, 2N4124, 2N3904, BD137, BD139, BC337, SS9018"
- type: Capacitor
count: 2
count: 1
value: "10uF"
- type: Resistor
count: 2
value: "10Ω"
- type: Misc
label: "2x 9V battery clips"
count: 1
value: "1K"
- type: Resistor
count: 1
value: "100K"
- type: Resistor
count: 1
value: "10K Variable"
- type: LED
count: 1
- type: Audio jack
count: 1
- type: Recipe
label: "18V Power Supply"
count: 1
Connections:
- -9v
- +9v
- +18v
- GND
pcb: "/recipes/power-supply/PaperCircuit.svg"
sample: "/recipes/power-supply/sample.mp3"
- Sound signal
pcb: "/recipes/SingleTransistorOsc/PaperCircuit.svg"
sample: "/recipes/SingleTransistorOsc/sample_Cropped.mp3"
buildNotes:
- "use alligator clips to connect your 18V and GND to your power supply"
- "Cut the middle leg of the transistor for this to work"
---
Not the most exiting circuit, but a good way to discover how paper circuits work, and get some soldering practice. Some chips, mostly op-amps, require a negative voltage, which does not come out of a battery by default. This circuit provides you with the range of -9V to +9V, and ground. Or, if you'd like, 0V to 18V, which will come of use in the [[SingleTransistorOSC]].
This "super simple oscillator circuit"[^easy] makes use of something called a "reverse avalance breakdown effect" in transistors. As I understand it, the capacitor and transistor of this circuit constantly trigger each other, creating a on-off-on-off-on-off situation, which in the audible realm sounds like a saw wave. Not all transistors can do it, so it's a bit of a trial and error process [^reddit].
illustrtie mbt 0v 9v range
[^easy]: I am very fed up with the amount of times someone has said something would be easy. It is not.
![Since this power supply will be tossed around during any of the upcoming recipes, I made it a bit more permanent by glueing it to a piece of wood.](/recipes/power-supply/photo.jpeg)
[^reddit]: This is why Reddit has advised against building this oscillator. But this is the only sound generating schematic that has worked so far and doesn't use chips.
For the -9V, GND & +9V outputs I'm using conductive[^conductive] nails. In future recipes you can hook up other circuits to these nails using alligator clips[^alligator-clips].
### Powering
Select the amount of voltage you need based on the transistor[^datasheet] you have. Mine needed 18V, so using alligator clips, I've connected our previously built power supply.
[^conductive]: You can test this using the *continuity* mode on your multi meter, which beeps if electricity can pass trough.
[^datasheet]: Find a datasheet online to discover your transistors' voltage limits before plugging in the circuit <ins>should I talk about datasheets more?</ins>
## About the circuit
### Testing & Troubleshooting
After double-checking all your connections, hook the audio out to an amplified speaker (like a small JBL). No sound? Here are things to try:
- Triple check your connections and the orientation of the capacitor.
- Play around with the potentiometer[^potmeter].
- using a multimeter, follow the entire audio trace from the transistor up until your audio cable.
- Try a different transistor
[^potmeter]: mine only makes a sound for a small portion of the potentiometers range.
## When there is noise
If you, like me, have struggled a lot to get any sound whatsoever, I can hopefully tell you that **this is where things will get fun(ky)**. Getting a single sound out of anything is such a eureka moment. [^clicks]Because from here, you'll be able to play around with the circuit and use our own imagination. For instance, using a different sized resistor to change the pitch. Or, using a Light Dependant Resistor to control the pitch based on the sound. Or adding a on/off button. Or, building your own keyboard using multiple resistors...
[^clicks]: Making and playing this circuit helped me a lot with understanding how electricity flows and how you can manipulate the flow.

0
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src/content/recipes/motor-synth.md
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---
title: Motor Synthesizer
description: This is the description
---
This recipe has been tested out during the Kunsthal workshop & the collicium!
![A video](https://pzwiki.wdka.nl/mw-mediadesign/images/e/ea/Vitrinekast_proposal_project_3.mp4)
<video width="320" controls>
<source src="https://pzwiki.wdka.nl/mw-mediadesign/images/e/ea/Vitrinekast_proposal_project_3.mp4">
</video>
## Schematic
I need to scan again the Zine made for this.
## Components
- A coil
- A magnet
- A motor
- A battery

19
src/content/recipes/power-supply/index.md
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@ -1,6 +1,7 @@
---
title: Power Supply
BOMTable: true
order: 0
shortDescription:
"Create a power supply for your future circuits"
BOM:
@ -12,31 +13,35 @@ BOM:
value: "10Ω"
- type: Misc
label: "2x 9V battery clips"
- type: Misc
label: "3 conductive nails for the +V, -V & GND pins"
Connections:
- -9v
- +9v
- GND
pcb: "/recipes/power-supply/PaperCircuit.svg"
---
This circuit provides -9V[^negative-volt], 0V/Ground and +9V outputs, by combining two 9V batteries. If your project requires it, you can use any kind of battery instead of the 9V one, as long as they're two of the same [^18V].
You could skip the capacitors and resistors and just connect the batteries together. However, they help filter electrical spikes, making the output smoother [^smooth].
[^negative-volt]: Some chips, mostly op-amps, require a negative voltage, which does not come out of a battery by default.
[^18V]: You can also get 18V: treat the -9V pin as 0V, making the 9V pin 18V
[^18V]: You can also get 18V: treat the -9V pin as 0V, making the 9V pin 18V
![Since this power supply will be tossed around during any of the upcoming recipes, I made it a bit more permanent by glueing it to a piece of wood.](/recipes/power-supply/photo.jpeg)
![Since this power supply will be used a lot, I made it a bit more permanent by glueing it to a piece of wood.](/recipes/power-supply/photo.jpeg)
In theory, you could skip the capacitors and resistors and just connect the batteries together. However, they help filter electrical spikes, making the output smoother[^smooth].
[^smooth]: ![The capacitor can filter electrical spikes for a more smooth voltage input](/recipes/power-supply/filtering.png){ height=30px }
[^smooth]: ![filtering electrical spikes](/recipes/power-supply/filtering.png){ height=7px }
Before plugging in the battery's, you could triple check your connections[^continuity]. When the batteries are plugged in, your pins should read -9V and +9V[^volt-meter].
#### Testing
Before plugging in the battery's, check your connections[^continuity]. When the batteries are plugged in, your pins should read -9V and +9V[^volt-meter].
[^volt-meter]: Test this by using the volt meter on the multimeter. One probe touches your ground pin, the other the pin you'd like to test.
[^continuity]: You can test this using the *continuity* mode on your multi meter, which beeps if electricity can pass trough.
#### Upgrade
An upgrade that could be useful is adding a power switch and LED to indicate the ON/OFF state of the power supply.
An upgrade that could be useful is adding a power switch and/or LED to show if the power supply is active.

33
src/content/recipes/rc-filters.md
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@ -1,33 +0,0 @@
---
title: Passive RC Filter
---
Using a small amount of components an Low or High Pass Filter can be built. This passive filter filters out unwanted frequencies, to create the swooooooooooshh sound.
Hopefully, this schematic is somewhat easy to build, and therefore I expect that this recipe will be combined with the single-transistor-oscillator recipe.
The selected Capacitor & Resistor decide at which point specifically the filter is cut off.
## Schematics
![Schematic of a Passive Low Pass Filter](https://www.electronics-tutorials.ws/wp-content/uploads/2013/08/fil5.gif?fit=326%2C161?fit=326,226)
![Schematic of a Passive High Pass Filter](https://www.electronics-tutorials.ws/wp-content/uploads/2018/05/filter-fil11.gif)
## Components
- A Capacitor
- A Resistor
## Sound Examples
TODO
## Images
TODO
## Used In
TODO

12
src/content/recipes/relax-osc.md
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@ -1,12 +0,0 @@
---
title: relaxation oscillator
source: Horowitz, P., & Hill, W. (2024). The art of electronics (Third edition, 20th printing with corrections). Cambridge University Press.
type: oscillator
schematic: "/assets/recipes/schematic-relax-osc.png"
---
Classic op-amp (or comparator) relaxation oscillator, using comparators with rail-to-rail output stages.
This schematic is taken from "The Art of Electronics". Since op-amps are such a common component, i think it would be feasible to salvage this.
*The image is a screenshot from the PDF, i'd like to re-arrange the image*

7
src/content/recipes/sequencers.md
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@ -1,7 +0,0 @@
---
title: Crank based sequencers
description: This is the description
---
In this recipe we are going to built a sequencer that generates (gate) triggers, using any crank to create a rotating disk.

47
src/content/recipes/single-transistor-oscillator-prev.md
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@ -1,47 +0,0 @@
---
title: A single transistor Oscillator
description: This is the description
---
Transistors are used often used when making sound circuits. The oscillators I am aware of usually combine transistor with some sort of a chip, to create a fast frequency. This specific oscillator however, only uses one transistor.
_I could talk about the history of electronic music and transistors here, but at the moment I do not think this should happen_
Since this schematic uses only a couple of components, I think this recipe could actually be combined with the rc-filter recipe.
## Schematic
![Schematic of the Single Transistor Oscillator](http://www.seekic.com/uploadfile/ic-circuit/s201357212933141.jpg)
## Components
- 1 Transistor _I need to figure out if transistors are interchangable_
- 1 Resistor
- A speaker
- A battery
- A Capacitor
The size of the capacitor and the resistor decide upon the frequency of the pitch.
## Notes while making the circuit
- First time i've tried building this circuit, it did not work. Since, I've found a book[^transistor-book] that might be of use when I would like to do more with transistors.
I suspect that salvaging IC's will be slightly more difficult, which is why i've been focussing on transistors, but ye, if i cant get the simplest circuit to work, maybe I should step a way from the suspisions and see what i'll find.
[^transistor-book]: Turner, R. P. (1957). Transistor circuits. GERNSBACK LIBRARY INC. https://tubes.mit.edu/6S917/_static/2024/resources/turner_transistor_circuits.pdf
Additionally, i've learned from Ash that crystals and transistors could be used to make radios!
Turns out, this circuit above is actually called the "Relaxation oscillator". The wikipedia description is actually pretty visual: "It consists of an energy-storing element (a capacitor or, more rarely, an inductor) and a nonlinear switching device (a latch, Schmitt trigger, or negative resistance element) connected in a feedback loop.[22][23] "
There are various relaxation circuits:
- Using the 555 timer IC
- Using an op-amp! https://upload.wikimedia.org/wikipedia/commons/thumb/1/15/OpAmpHystereticOscillator.svg/440px-OpAmpHystereticOscillator.svg.png
Then there are also "RC Oscillators" https://en.wikipedia.org/wiki/RC_oscillator
AGain no luck with this schematic....
I'll try my luck with a 555 timer circuit now.

47
src/content/recipes/single-transistor-oscillator.md
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@ -1,47 +0,0 @@
---
title: A single transistor Oscillator
description: This is the description
---
Transistors are used often used when making sound circuits. The oscillators I am aware of usually combine transistor with some sort of a chip, to create a fast frequency. This specific oscillator however, only uses one transistor.
_I could talk about the history of electronic music and transistors here, but at the moment I do not think this should happen_
Since this schematic uses only a couple of components, I think this recipe could actually be combined with the rc-filter recipe.
## Schematic
![Schematic of the Single Transistor Oscillator](http://www.seekic.com/uploadfile/ic-circuit/s201357212933141.jpg)
## Components
- 1 Transistor _I need to figure out if transistors are interchangable_
- 1 Resistor
- A speaker
- A battery
- A Capacitor
The size of the capacitor and the resistor decide upon the frequency of the pitch.
## Notes while making the circuit
- First time i've tried building this circuit, it did not work. Since, I've found a book[^transistor-book] that might be of use when I would like to do more with transistors.
I suspect that salvaging IC's will be slightly more difficult, which is why i've been focussing on transistors, but ye, if i cant get the simplest circuit to work, maybe I should step a way from the suspisions and see what i'll find.
[^transistor-book]: Turner, R. P. (1957). Transistor circuits. GERNSBACK LIBRARY INC. https://tubes.mit.edu/6S917/_static/2024/resources/turner_transistor_circuits.pdf
Additionally, i've learned from Ash that crystals and transistors could be used to make radios!
Turns out, this circuit above is actually called the "Relaxation oscillator". The wikipedia description is actually pretty visual: "It consists of an energy-storing element (a capacitor or, more rarely, an inductor) and a nonlinear switching device (a latch, Schmitt trigger, or negative resistance element) connected in a feedback loop.[22][23] "
There are various relaxation circuits:
- Using the 555 timer IC
- Using an op-amp! https://upload.wikimedia.org/wikipedia/commons/thumb/1/15/OpAmpHystereticOscillator.svg/440px-OpAmpHystereticOscillator.svg.png
Then there are also "RC Oscillators" https://en.wikipedia.org/wiki/RC_oscillator
AGain no luck with this schematic....
I'll try my luck with a 555 timer circuit now.

30
src/content/recipes/using-pcb-s-as-expressive-touch-pads.md
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@ -1,30 +0,0 @@
---
title: Using PCB's as expressive touch pads
---
If you salvage buttons from device, you might come across patterns like the one below in the PCB, below the button. By default, the two traces seen on the PCB, do not touch. But, when pressing a button, a connection is made between the two traces, allowing for a voltage to flow trough.
![PCB with a Button](https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2Fibex.tech%2Fwp-content%2Fuploads%2Fsites%2F3%2Fpcb_switch_pads.jpg&f=1&nofb=1&ipt=03d7884aeef82b49dd41bb5dd3ae13d99915b3402011780013d00c97fd5ac12f&ipo=images)
This idea is applied in the recipe, but by using the entire PCB. By scratching of the green layer, the copper plate becomes visible. Usually the larger areas are `ground`. Now that the copper is exposed, you can directly solder on to the board, and connect the wires in the circuit where you'd like your switch to be.
## Schematics
_I do really need images/schematics/drawings to make this more clear!_
## Components
- A componentless PCB!
## Sound Examples
TODO
## Images
TODO
## Used In
TODO
Planned for Workshop #1 at the unrepair nights, 6th of januari 2025.

53
src/templates/base.jinja
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@ -8,9 +8,9 @@
<link rel="stylesheet" type="text/css" href="/assets/styles/typography.css">
<link rel="stylesheet" type="text/css" href="/assets/styles/style.css">
<link rel="stylesheet" type="text/css" href="/assets/styles/paged.css">
<link rel="stylesheet" type="text/css" href="/assets/styles/media.css">
<link rel="stylesheet" type="text/css" href="/assets/styles/paged-interface.css">
<link rel="stylesheet" href="/assets/styles/print.css" media="print">
<meta name="format-detection" content="telephone=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
@ -38,41 +38,54 @@
super(chunker, polisher, caller);
}
afterRendered(pages) {
console.log(pages)
pages.forEach((p) => {
p.element.querySelectorAll(".sample").forEach((el) => {
el.addEventListener("click", function (e) {
const audioEl = e.currentTarget.querySelector("audio");
if(audioEl.paused) {
document.querySelectorAll(".sample").forEach((s) => {
s.removeAttribute("active");
s.querySelector("audio").pause();
})
e.currentTarget.setAttribute("active", true)
audioEl.play();
} else {
audioEl.pause();
e.currentTarget.removeAttribute("active")
el.addEventListener("click", function (e) {
const audioEl = e.currentTarget.querySelector("audio");
if(audioEl.paused) {
document.querySelectorAll(".sample").forEach((s) => {
s.removeAttribute("active");
s.querySelector("audio").pause();
})
e.currentTarget.setAttribute("active", true)
audioEl.play();
} else {
audioEl.pause();
e.currentTarget.removeAttribute("active")
}
})
})
}
})
})
})
}
beforeParsed(content) {
let count = 0;
content.querySelectorAll(`a[role="doc-noteref"]`).forEach((ref) =>{
console.log(ref)
const href = ref.getAttribute("href");
let note = content.querySelector(".footnotes " + href);
if(note) {
console.log(note)
note.setAttribute("count", ref.querySelector("sup").textContent);
ref.appendChild(note);
}
})
let filter = [];
let bib = content.querySelector('[template-type="bib"]');
if(bib) {
content.querySelectorAll(".csl-entry").forEach((e) => {
console.log(e)
if (filter.indexOf(e.id) == -1) {
filter.push(e.id);
bib.appendChild(e);
} else {
e.parentNode.removeChild(e);
}
})}
}
}
Paged.registerHandlers(MyHandler);

1
src/templates/pages:front.jinja
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@ -1 +0,0 @@
pages

43
src/templates/snippets/BOM.jinja Normal file
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@ -0,0 +1,43 @@
{%- macro showBOM(content) -%}
{% if content['BOM'] %}
<aside>
<h3>BOM</h3>
<ul>
{% for thing in content['BOM'] %}
<li>
{% if thing['type'] %}
{% if thing['label'] %}
{{ thing['label'] }}
{% else %}
{{ thing['count'] }}
{{ thing['value'] }}
<a href="/components/{{ thing['type'] |slugify }}.html">{{thing['type']}}</a>
{% endif %}
{% if thing['alternative'] %}
<i>alternative: {{thing['alternative']}}</i>
{% endif %}
{% else %}
{{ thing }}
{% endif %}
</li>
{% endfor %}
</ul>
</aside>
{% endif %}
{% if content['buildNotes'] %}
<aside>
<h3>Build notes</h3>
<ul>
{% for thing in content['buildNotes'] %}
<li>
{{ thing }}
</li>
{% endfor %}
</ul>
</aside>
{% endif %}
{%- endmacro -%}

14
src/templates/snippets/page-circuit.jinja
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@ -1,3 +1,6 @@
{% from 'snippets/BOM.jinja' import showBOM with context %}
{%- macro showCircuit(content) -%}
{% if content['pcb'] %}
<article template-type="circuit">
@ -5,9 +8,16 @@
<h2>Paper circuit: {{content['title']}}</h2>
</header>
<section class="section--pcb">
<img src="{{ content['pcb']}}" class="media--pcb" />
<section class="media--pcb">
<img src="{{ content['pcb']}}" />
</section>
<aside>
{{ showBOM(content) }}
<h3>Your notes</h3>
<p>....</p>
</aside>
</article>
{% endif %}
{%- endmacro -%}

12
src/templates/snippets/page-cover.jinja
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@ -4,19 +4,19 @@
{%- macro showCoverPage(chapter, documents, index) -%}
<section class="meta">
<span data-chapter-title>{{chapter['title']}}</span>
</section>
<header class="page--cover">
<section class="meta">
<span data-chapter-title>{{chapter['title']}}</span>
</section>
<h3>Chapter {{index}}</h3>
<h1>{{chapter['title']}}</h1>
{% if chapter['nested'] %}
<ul class="list--frontpage">
{% for nest in documents[chapter['nested']] %}
<li><h3>{{nest['title']}} +<ins> (pagenr/link)</ins></h3></li>
{% for nest in documents[chapter['nested']]|sort(attribute='order') %}
<li><h3>{{nest['title']}} <ins> (pagenr/link)</ins></h3></li>
{% endfor %}
</ul>
{% endif %}

45
src/templates/snippets/page-detail.jinja
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@ -1,12 +1,19 @@
{%- macro showDetail(content, parentChapter) -%}
{% from 'snippets/BOM.jinja' import showBOM with context %}
{%- macro showDetail(content, parentChapter, isNested = false) -%}
<article>
<section class="meta">
<span data-chapter-title>{{content['title']}}</span>
{% if isNested %}
<span data-subchapter-title>{{content['title']}}</span>
{% else %}
<span data-chapter-title>{{content['title']}}</span>
{% endif %}
</section>
<header>
<h2>[[chapter title]]</h2>
<h2>:chapter title:</h2>
<h1>{{content['title']}}</h1>
@ -21,43 +28,15 @@
{% if content['sample'] %}
<div class="sample fn-sample">
<audio src="{{ content['sample'] }}"></audio>
<svg class="icon play" width="12" height="13" viewBox="0 0 12 13" fill="none" xmlns="http://www.w3.org/2000/svg">
<path d="M4 2.52588V9.52588L9.5 6.02588L4 2.52588Z" fill="black"/>
</svg>
<svg width="12" height="12" viewBox="0 0 12 12" fill="none" class="icon pause" xmlns="http://www.w3.org/2000/svg">
<path d="M3 9.5H5V2.5H3V9.5ZM7 2.5V9.5H9V2.5H7Z" fill="black"/>
</svg>
<svg class="icon play" width="12" height="13" viewBox="0 0 12 13" fill="none" xmlns="http://www.w3.org/2000/svg"><path d="M4 2.52588V9.52588L9.5 6.02588L4 2.52588Z" fill="black"/></svg>
<svg width="12" height="12" viewBox="0 0 12 12" fill="none" class="icon pause" xmlns="http://www.w3.org/2000/svg"><path d="M3 9.5H5V2.5H3V9.5ZM7 2.5V9.5H9V2.5H7Z" fill="black"/></svg>
<label for="">play sample (web only)</label>
</div>
{% endif %}
</header>
{% if content['BOM'] %}
<aside>
<h4>BOM</h4>
<ul>
{% for thing in content['BOM'] %}
<li>
{% if thing['type'] %}
{% if thing['label'] %}{{ thing['label'] }}{% endif %}
{{ thing['count'] }}
{{ thing['value'] }}
<a href="/components/{{ thing['type'] |slugify }}.html">{{thing['type']}}</a>
{% else %}
{{ thing }}
{% endif %}
</li>
{% endfor %}
</ul>
</aside>
{% endif %}
<section>
{{content['body']}}
</section>

9
src/templates/snippets/pages-nest.jinja
View File

@ -5,10 +5,11 @@
{%- macro showNestedPages(chapter, documents) -%}
{% if chapter['nested']%}
<pre>{{ documents[chapter['nested']]|length }} </pre>
{% for nest in documents[chapter['nested']] %}
{{ showDetail(nest, chapter) }}
{{ showCircuit(nest) }}
{% for nest in documents[chapter['nested']]|sort(attribute='order') %}
{% if "published" not in nest or nest["published"] is false %}
{{ showDetail(nest, chapter, true) }}
{{ showCircuit(nest) }}
{% endif %}
{% endfor %}
{% endif %}
{%- endmacro -%}

7
src/templates/thesis.jinja
View File

@ -2,8 +2,6 @@
{% from 'snippets/page-front.jinja' import pageFront with context %}
{% from 'snippets/page-circuit.jinja' import showCircuit with context %}
{% from 'snippets/pages-nest.jinja' import showNestedPages with context %}
%}
{% from 'snippets/page-cover.jinja' import showCoverPage with context %}
{% extends "base.jinja" %}
@ -29,6 +27,9 @@
</article>
</section>
{% for chapter in documents['chapters'] %}
<section template-type="chapter">
@ -56,7 +57,7 @@
<span template-type="bib"></span>
{% endblock %}
{% block aside %} {% endblock %}