N31
===

- Role: Air quality sensors
- MCU: AtTiny84
- Frequency: 1MHz
- Connection: RJ45
- Predecessor: N26
- COM: COM2W
- Periphery:
  - TWI interface
    - SGP-30/40 air quality sensor
- Apps:
  - NETWORK:       Basic network functionality (address setup etc.)
  - REPORTSENSORS: report sensor data from temperature sensor etc.
  - STATS        : periodically send stats data