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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).
Part List
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
 | SEN0536 | GRAVITY: I2C SCD41 INFRARED CO2 | 22 - Immediate | $484.86 | View Details | |
 |  | DFR0868 | BEETLE ESP32-C3 VERSION 2 | 159 - Immediate | $65.03 | View Details |
 | DFR0995 | 1.47 172320 IPS LCD DISPLAY MODU | 3 - Immediate | $81.50 | View Details | |
 | FIT0750 | LED MOD RGB LINEAR STRIP | 1 - Immediate | $194.44 | View Details |
Hong Kong, China