Work with rpi-sensors-serial (same repository)

Arduino program read sensors and send values to computer through serial.

Sensors :
- DHT22 temperature/humidit sensor
- BH1750 light meter (I2C)
- PIR presence sensor

Transmitters / Screen :
- 8 digits "7 segments" display control with MAX7219 multiplexer (SPI)
- 433Hz Transmitter
- PWM Buzzer