HackSpace Magazine Issue 72 shows the Pico W Air:
Free software and open hardware have enabled a boom in citizen science. This is just the latest device to add to our knowledge of the world around us.
This board comes with a Raspberry Pi Pico W, and adds a Qwiic connector for I2C devices, breaks out a few GPIO pins for 3.3 V, ADC, GND, and four more pins. Most usefully though, is the built-in MQTT client and built-in HTML server, so it can easily transmit the environmental data coming in. It comes with a connection for a PMS5003 particulate matter sensor, which you’ll have to buy separately, along with a power source. Other than that, it’s a one-stop device.
The project can be found at https://hsmag.cc/PicoAirQualityBoard
The board ships with CircuitPython firmware baked into the board. All you have to do is connect to a computer and edit the settings.toml file with WiFi credentials and edit any other settings you might want to change. Comprehensive documentation in the Github repository and beginner-friendly code documentation. The Air is available on Tindie.
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