SPX-18385 · SparkFun
Measure concentrations up to 100% with high repeatability and long-term stability, adds humidity and temperature compensation via a built-in SHTC3, and connects easily over I2C using the Qwiic ecosystem. (SparkFun SPX-18385)
| Part number | SPX-18385 |
|---|---|
| Manufacturer | SparkFun |
| Category | Sensors › Gas & Air Quality |
| Pins | 4 |
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.
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