Description
The Adafruit SCD-30 breakout is the exact sensor class used by the Raspberry Pi CO₂ monitor project: a Sensirion NDIR CO₂ module with temperature and humidity readings over I²C.
Project compatibility
- Uses I²C address
0x61. - Connect the breakout’s VIN to the Pi’s 3.3 V rail for this project.
- Compatible with the Adafruit CircuitPython SCD30 library used by the guide.
Before wiring
CO₂ readings need fresh-air calibration and adequate airflow around the sensor. The breakout includes regulation and level shifting, but follow the project’s 3.3 V wiring. Depending on the connection method, header soldering or a compatible STEMMA QT cable may be required.
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