Open AIR Sense PRO

🌍 Open AIR Sense PRO – Open Source Air Quality Monitor

Take control of your environment with the Open AIR Sense PRO, a fully open-source, customizable air quality monitor designed for developers, makers, and enthusiasts. Whether you're tracking indoor air quality, running environmental studies, or integrating with smart home systems, this device delivers professional-grade sensing in a compact, hackable format.

Key Features:

Modular Sensor Support:All high Quality Swiss Sensors (Senserion)

🟣 SPS30 – High-precision particulate matter sensor (PM1.0, PM2.5, PM4.0, PM10).

🟢 SCD40 – Accurate CO₂, temperature, and humidity measurements.

🔴 SGP41 – Gas index for VOCs and NOx.

Connectivity:

🌐 Wi-Fi & Ethernet – For direct integration in Home Assistant

🔗 QWIIC Connector – Easily expand functionality with other I²C sensors and modules

🔌 USB-C Powered – Use your left over USB charger!

Open Source & Expandable:

• Full schematics, firmware, and 3D models available
• Compatible with platforms like Arduino, ESPHome, and Home Assistant
• Easy enclosure customization thanks to open design! We highly encourage you to print and customize your own housing!

Do's and Don'ts:

• Do take it apart :D!
• Do design your own housing.
• Do Create custom lighting effects.
• Do adjust your ventilation system with the sensor values.
• Don't place the sensor in direct sunlight.
• Don't place the sensor outside.
• Don't place the sensor in an area with high humidity.
• Don't place the sensor in a windy area, this will influence the temperature and RH calibration.

Keep in mind If the sensor comes pre-programmed to either be Wi-Fi or Ethernet you need to reprogram the sensor to be able to use the other connectivity option. So if you order with Ethernet preprogrammed in and you want to use Wi-Fi you need to reprogram it using ESPHOME.

DIY KIT of the electronics available here: Click

Full Version available here: Click

If you keep the orientation the same as in the .3MF file you have to use zero support material. We designed it so no plastic is wasted making this product :D!

This housing was designed by the one and only : Sijmen Jansen

The housing is released under a Creative Commons Attribution-NonCommercial-ShareAlike (CC BY-NC-SA) 4.0 License.