OpenAirMonitor

Work in progress

The OpenAirMonitor is a solar-powered, outdoor air quality monitor that transmits data over LoRaWAN and Bluetooth LE. It measures particulates (PM1, PM2.5 and PM10), humidity and temperature. The monitor has a STEMMA QT connector, so can be extended with other sensors.

The monitor is programmed in JavaScript over Bluetooth LE using Espruino.

The following components can be connected to the PCB:

• PMS7003 particulate matter sensor
• 868MHz (EU/UK) SMA antenna
• 3.7V LiPo battery, e.g. this 6600mAh battery
• 6V solar panel
• SHT40 temperature & humidity sensor using STEMMA QT connector

Hardware

See this OSHWLab project for schematic, PCB layout and Bill of Materials.

The LoRa-E5 module can be obtained from Seeed Studio's webshop, or as part of their Fusion PCB Assembly Service.

Software

Upload main.js to the MDBT42Q module over Bluetooth LE using Espruino.