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Python I2C Driver for Sensirion STC3X

This repository contains the Python driver to communicate with a Sensirion sensor of the STC3X family over I2C.

STC3X picture

Click here to learn more about the Sensirion STC3X sensor family.

The measured gas mixture depends on the STC3x product and configured binary gas. Please refer to the datasheet and API documentation to get a list of supported binary gases.

Supported sensor types

Sensor name I²C Addresses
STC31-C 0x29
STC31 0x29

The following instructions and examples use a STC31-C.

Connect the sensor

You can connect your sensor over a SEK-SensorBridge. For special setups, you find the sensor pinout in the section below.

Sensor pinout

sensor wiring picture

Pin Cable Color Name Description Comments
1 red VDD Supply Voltage 2.7V to 5.5V
2 yellow SCL I2C: Serial clock input
3 black GND Ground
4 green SDA I2C: Serial data input / output

Documentation & Quickstart

See the documentation page for an API description and a quickstart example.

Contributing

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 :-)

Check coding style

The coding style can be checked with flake8:

pip install -e .[test]  # Install requirements
flake8                  # Run style check

In addition, we check the formatting of files with editorconfig-checker:

pip install editorconfig-checker==2.0.3   # Install requirements
editorconfig-checker                      # Run check

License

See LICENSE.