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    node-red-contrib-scd4x

    1.0.1 • Public • Published

    node-red-contrib-scd4x

    Node-RED node for reading measurements from Sensirion SCD40 and SCD41, the CO2, temperature, and humidity sensors.

    Uses scd4x-node.

    Usage

    Find the scd4x node in the sensor category in the palette, and use in your flow.

    The node replaces the message payload with an object containing the measured values:

    {
      co2Concentration: <number>,
      temperature: <number>,
      relativeHumidity: <number>
    }

    Requirements

    The SCD4x must be in periodic measurement mode and a measurement must be available when triggering this node.

    The permission to read the I2C bus device (e.g. /dev/i2c-1) is required.

    Usage in Docker on Raspberry Pi

    When starting the Node-RED container, use these options:

    • --device /dev/i2c-1 – point to the I2C device to which the SCD4x is connected
    • --group-add <id of i2c group> – make the container process run as a member of the i2c group

    For example:

    docker run -d \
      -p 1880:1880 \
      -v /home/pi/.node-red:/data \
      --device /dev/i2c-1 \
      --group-add 998 \
      --name nodered \
      nodered/node-red
    

    Install

    npm i node-red-contrib-scd4x

    DownloadsWeekly Downloads

    1

    Version

    1.0.1

    License

    MIT

    Unpacked Size

    6.27 kB

    Total Files

    9

    Last publish

    Collaborators

    • rsmeral