Components used:

- MicroPython board PYB v1.1 - https://store.micropython.org/product/PYBv1.1
- PADI IoT Stamp https://www.pine64.org/?page_id=917
- NOVA SDS011 PM sensor
- Battery
- Solar panel

Microcontroller pins used:

- UART2 9600,8,n,1 - TX PA2 RX PA3 connected to the PADI
- UART6 38400,8,n,1 - TX PC6 RX PC7 connected to the NOVA sensor
- UART1 115200,8,n,1 - TX PB6 RX PB7 debug console (printf output)
- BLUE LED (PB4) - control power for the nova sensor via MOSFET
- GREEN LED (PA14) - control power for the PADI IoT