Python I2C Driver for Sensirion LD20
July 16, 2026 · View on GitHub
This repository contains the Python driver to communicate with a Sensirion sensor of the LD20 family over I2C.
Click here to learn more about the Sensirion LD20 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 |
|---|---|
| LD20-0600L | 0x08 |
| LD20-2600B | 0x08 |
The following instructions and examples use a LD20-0600L.
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
| Pin | Cable Color | Name | Description | Comments |
|---|---|---|---|---|
| 1 | green | SDA | I2C: Serial data input / output | |
| 2 | red | VDD | Supply Voltage | 3.2V to 3.8V |
| 3 | black | GND | Ground | |
| 4 | yellow | SCL | I2C: Serial clock input | |
| 5 | NC | Do not connect |
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.