Building your own portable Air Quality Sensor #RaspberryPiPico #CircuitPython #PiDay @Raspberry_Pi @hackadayio

Costas Vav outlines building an AQI sensor with off-the-shelf parts and 3D-printed case on

After visiting Seattle this summer during the forest fires and being made aware of how important AQI is, I decided to build my own AQI device.

When going into this project, I was not 100% sure what I wanted, but after a few iterations of hardware combinations, I came to the following requirements:

  • Portable
  • Off-the-shelf components
  • 3D-printable case
  • Fast start time

I prefer CircuitPython over Arduino, so that also helped in the decision (of parts).

The parts used:

  1. Adafruit Feather RP2040 (
  2. PMS5003 PM2.5 Air Quality Sensor (
  3. Lithium Battery (
  4. Adafruit Powerboost 1000 Charger (
  5. 0.96″ OLED Display (
  6. On/Off Switch
  7. Power Rail (snapped an end of a breadboard)
  8. Jumper Wires
  9. M2 Screws

See the build details on and more on Hackaday.

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