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Product description: SCD-30 - Temperature, humidity and carbon dioxide sensor - I2C - STEMMA QT / Qwiic - Adafruit 4867
Precisionsensorfor measuring temperature, humidity and carbon dioxide concentration from Adafruit. The measurement range isfrom 400 ppm to 10000 ppm, with a measurement accuracy of± 30 ppm + 3%. The module has STEMMA QT / Qwiic connectors, which improve the connection of the sensor with the main module, such as Arduino orMetroboard. It is poweredfrom 3.3 V to 5 V. It usesI2Ccommunication interface, with address0x61. The sensor is fullycalibratedand linearized, and thedual-channeldetectionallows for a measurement with high precision and stability.
Product compatible with Arduino
On manufacturer websiteuser guideand sample program code andlibraryfor Arduino IDE environment are available.
Description of the module pins
| Pin | Description |
|---|---|
| VIN | Power supply pin, voltage from 3.3 V to 5 V. |
| 3Vo | Power supply pin, voltage 3.3 V. |
| GND | System ground pin. |
| SCL | I2C bus clock line pin. |
| SDA | I2C bus data line pin. |
| RDY | Data Ready pin. |
Scheme of connecting sensor with Metro board by STEMMA QT / Qwiic connector.
Sensor connection
Sensor connection is done usinggoldpinconnectors (included in set) orSTEMMA QT / Qwiicconnectors. Example connections are presented using Metro board, which is equivalent of Arduino.
Technical specifications of the sensor from Adafruit
- Circuit: SCD-30 and SHT31-D
- Sensor technology: NDIR
- Measuring range: from 400 ppm to 10000 ppm
- Measurement precision: ± 30 ppm + 3%
- Current consumption: 19 mA
- Communication interface: I2C
- Communication interface address: 0x61
- Two-channel detection
- Fully calibrated and linearized
- Connectors: STEMMA QT / Qwiic
- Compatible with Arduino
- Dimensions: 51 x 25.4 x 8.8 mm
The sensor module from Adafruit is fully calibrated and linearized.
