The PiAQ is an open hardware and software indoor air quality sensor developed by the National Association of REALTORS’ CRT Labs.

The goal for this project is to make information about the air people are breathing more accessible. While the prevailing thought has been that outdoor air quality, especially in cities, is worse than indoor. Did you know that the reverse can actually be true? In fact, the EPA estimates that indoor air quality can be two-to-five times worse than outdoors in some places, which is especially troubling considering we spent most of our time indoors.

Specifications

Measurement Points:

  • Temperature (SHT31)
  • Relative Humidity (SHT31)
  • VOC (Volatile Organic Compounds) (IAQ Core)
  • Derived CO2 (IAQ Core)
  • Barometric Pressure (MPL3115A2)
  • Light Intensity (TSL2561)
  • CO Concentration (MiCS-4154)
  • NO2 Concentration (MiCS-4154)
  • Sound Intensity (ADMP401)

Connectivity Options

  • FSK (RFM69HW 433/915MHz)
  • WiFi (Particle Photon)
  • Cellular (Particle Electron) (Coming soon)
  • LoRa (Coming Soon)

Build Your Own

Schematics

Eagle CAD Files

Bill of Materials

Datasheets

License

  • Apache License Version 2.0

Authors and Contributors

Support or Contact

For more information check out our Frequently Asked Questions.