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Python Driver for Sensirion I²C Carbon Dioxid Sensor - SCD40, SCD41

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Python I2C Driver for Sensirion SCD4X

This repository contains the Python driver to communicate with a Sensirion sensor of the SCD4X family over I2C.

SCD4X picture

Click here to learn more about the Sensirion SCD4X sensor family.

Not all sensors of this driver family support all measurements. In case a measurement is not supported by all sensors, the products that support it are listed in the API description.

Supported sensor types

Sensor name I²C Addresses
SCD40 0x62
SCD41 0x62

The following instructions and examples use a SCD41.

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 yellow SCL I2C: Serial clock input
2 black GND Ground
3 red VDD Supply Voltage 2.4V to 5.5V
4 green SDA I2C: Serial data input / output

Documentation & Quickstart

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

Contributing

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.