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How A Photo-acoustic CO2 Sensor Works - Gravity: I2C SCD41 Infrared CO2 Sensor (400 - 5000 ppm)

This project creates a portable CO₂ detection card using the SCD41 infrared photo-acoustic sensor, replacing bulky NDIR systems with MEMS microphones to shrink optical chambers for compact design. It delivers ±(40 ppm + 5% MV) accuracy in 400-5000 ppm range, enabling lightweight monitoring while requiring minimal environmental interference (vibrations, heat).

4/21/2025 4:54:25 PM

Part List

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
GRAVITY: I2C SCD41 INFRARED CO2SEN0536GRAVITY: I2C SCD41 INFRARED CO224 - Immediate$58.90View Details
BEETLE ESP32-C3 VERSION 2DFR0868BEETLE ESP32-C3 VERSION 266 - Immediate$7.90View Details
1.47 172320 IPS LCD DISPLAY MODUDFR09951.47 172320 IPS LCD DISPLAY MODU0 - Immediate$9.90View Details
LED MOD RGB LINEAR STRIPFIT0750LED MOD RGB LINEAR STRIP2 - Immediate$23.62View Details

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