Sensirion I2C SCD4x Arduino Library
This is the Sensirion SCD4x library for Arduino using the I2C interface.
Click here to learn more about the SCD4x sensor and the SCD41 Evaluation Kit Board.
To install, download the latest release as .zip file and add it to your Arduino IDE via
Sketch => Include Library => Add .ZIP Library...
Don't forget to install the dependencies listed below the same way via
Add .ZIP Library
Note: Installation via the Arduino Library Manager is coming soon.
Connect the SCD4x sensor to your Arduino board's standard I2C bus. Check the pinout of your Arduino board to find the correct pins. The pinout of the SCD4x sensor board can be found here
- VDD of the SEK-SCD41 to the 3.3V of your Arduino board (5V is also possible)
- GND of the SEK-SCD41 to the GND of your Arduino board
- SCL of the SEK-SCD41 to the SCL of your Arduino board
- SDA of the SEK-SCD41 to the SDA of your Arduino board
exampleUsagesample project within the Arduino IDE
File => Examples => Sensirion I2C Scd4x => exampleUsage
Uploadbutton in the Arduino IDE or
Sketch => Upload
When the upload process has finished, open the
Serial Plottervia the
Toolsmenu to observe the measured CO2, Temperature and Humidity values. Note that the
Baud Ratein the corresponding window has to be set to
Contributions are welcome!
We develop and test this driver using our company internal tools (version control, continuous integration, code review etc.) and automatically synchronize the master branch with GitHub. But this doesn't mean that we don't respond to issues or don't accept pull requests on GitHub. In fact, you're very welcome to open issues or create pull requests :)
This Sensirion library uses
clang-format to standardize the
formatting of all our
.h files. Make sure your contributions are
-i flag will apply the format changes to the files listed.
clang-format -i *.cpp *.h
Note that differences from this formatting will result in a failed build until they are fixed.