Gravity: SCD41 CO2 Sensor (I2C, 400-5000 ppm)
SCD41 photoacoustic NDIR CO2 sensor (400–5000 ppm, ±(40 ppm + 5% MV)) with I2C output (address 0x62); 3.3–5 V, also measures temperature (±0.8 °C) and humidity (±6 %RH). Under 4 mA average current; 60 s response time.
Pinout
- VCC1Type · Power
- GND2Type · Ground
- SCL3Type · I2C
- SDA4Type · I2C
| Pin | Position | Type |
|---|---|---|
| VCC | 1 | Power |
| GND | 2 | Ground |
| SCL | 3 | I2C |
| SDA | 4 | I2C |
Pin details
4 connections- VCC1Power
- GND2Ground
- SCL3I2C
- SDA4I2C
Start wiring
I2C · Analog · UART · 3.3 – 5 V · Breakout
Waveshare lists MQ-2 for combustible gases and smoke, MQ-3 for alcohol, and MQ-135 for mixed indoor pollutants such as NH3, NOx, alcohol,…
Module pins: VCC, GND, SCL, SDA. Schematik maps them to your board in the app.
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