SEN-29260 · SparkFunActive
The SparkFun STC31 is a high-precision, Qwiic-enabled sensor that accurately measures extreme CO₂ concentrations up to 100% volume. (SparkFun SEN-29260)
| Part number | SEN-29260 |
|---|---|
| Manufacturer | SparkFun |
| Category | Sensors › Gas & Air Quality |
| Pins | 4 |
SparkFun CO2 Sensor - STC31 (Qwiic) pinout
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | GND | ground | |
| 2 | 3V3 | power | |
| 3 | SDA | bidirectional | |
| 4 | SCL | input |
Schematic symbol and footprint
Schematic symbol
Footprint: JST-SH 4-pin SMD right-angle (SM04B-SRSS-TB) - Qwiic / STEMMA QT — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.
Where to buy
| Supplier | Stock | Price | Status | |
|---|---|---|---|---|
| Mouser | 0 | $135.28 (1+) | New Product | View |
Stock and prices from the suppliers, checked 2026-10-08; excluding tax and shipping.
Related parts
Adafruit BME680 - Temperature, Humidity, Pressure and Gas SensorADA3660
Adafruit ENS160 MOX Gas Sensor - Sciosense CCS811 UpgradeADA5606
Adafruit MiCS5524 CO, Alcohol and VOC Gas Sensor BreakoutADA3199
Adafruit PMSA003I Air Quality BreakoutADA4632
Adafruit SCD-30 - NDIR True CO2 Temperature and Humidity SensorADA4867
Adafruit SGP30 Air Quality Sensor Breakout - VOC and eCO2ADA3709
ENS160
Gravity: Electrochemical Oxygen / O2 Sensor (0-25%Vol, I2C)SEN0322