This node for Node-RED provides easy access to read temperature and humidity values from the Sensirion SHT31 or SHT35 sensors.

• Raspberry Pi
• I2C must be enabled
• Sensirion SHT31 or SHT35 sensor
• Node.js v7.6 or newer
• sht31-node from Thomas Bouvier

# Run this in your favourite terminal
npm install sht31-node

Highly recommended: Run the Node-Red specific bash script for the Raspberry Pi followed by

npm rebuild
npm update

Just install this module in your node-RED configuration folder

cd ~/.node-red
npm install node-red-contrib-sht

Or globally:

npm install -g node-red-contrib-sht

You will find this node in the i2c bus section of the palette panel or just filter the nodes for "sht".

The msg.payload of the outgoing object will be a object with the key names temperature and humidity and the values, e.g. { "temperature" : 21.9, "humidity" : 37,5 }. Temperature value unit is in °C, humidity in %RH.

The queried I2C address of 0x44 is changable.

1. Fork it
2. Create your feature branch: git checkout -b my-new-feature
3. Commit your changes: git commit -am 'Add new feature'
4. Push to the branch: git push origin my-new-feature
5. Submit a pull request

This is just a very basic and simple Node-RED wrapper for Thomas Bouviers excelent sht31-node Node.js library. He deserves all credits.

MIT