/RPi-DHT20

Raspberry Pi Python library for DHT20 Temperature and Humidity Sensor with CRC verification.

Primary LanguagePythonMIT LicenseMIT

RPi-DHT20

Raspberry Pi Python library for DHT20 Temperature and Humidity Sensor with CRC verification.

Requirements

This library was tested with the following:

  • Aosong DHT20 SIP Packaged Temperature and Humidity Sensor
  • Raspberry Pi 3 Model B
  • Ubuntu Server 22.10, 23.04, 23.10 and 24.04 LTS

Similar configurations should also work.

Set up

  1. Connect the DHT20 sensor to the Raspberry Pi
    Note: If a different Raspberry Pi model and/or operating system is used, it may be necessary to change the I2C_BUS in DHT20_demo.py and/or enable the I2C interface.

  2. Install smbus2 Python module that is used for accessing the I2C bus

    sudo apt install python3-smbus2

  3. If /dev/i2c* does not exist, enable the i2c-dev kernel module by adding the following line to the /etc/modules file

    i2c-dev

  4. Test by running the demo

    sudo python3 DHT20_demo.py

Usage

Refer to the usage example in DHT20_demo.py.

References