# Running the Arduino side
The arduino listens to MQTT messages, and acts accordingly. Each arduino can serve a different purpose, for instance, running motor shields, or turning a fan on/off.



### 1. Create your own "secret.h" file, following this format

```C++
#define VITRINE_SSID "";
#define VITRINE_WIFI_PASS ""
#define MQTT_ARDUINO_USERNAME ""
#define MQTT_ARDUINO_PASS ""
#define hasMotorshield false # Set this if the current arduino has motors attached
#define hasRelayShield false # Set this if the current arduino has power attached
#define arduinoName "motor-arduino"
```

Here, you can also provide some information regarding the type of arduino, and which code you'd like to compile. 

### 2. Select your board to compile with. As I always forget which boards to select, here's my cheat sheet:

| Arduino  | Board |
| ------------- | ------------- |
| ArduinoWifi | LOLIN(WeMos) D1 R1 |
| ESP32 DEVKITV1 | DOIT ESP DEVKIT V1 |