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node-red-contrib-mh-z19-co2sensor

v1.0.4

Published

With this node you can use the MH-Z19 sensor

Downloads

28

Vulnerabilities

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Links

Git

Maintainers

jsbergbaujsbergbau

Keywords

MH-Z19node-redmh-z19co2sensorair-qualitymhz19mhz-19mhz19bMH-Z19Bmh-z19bmhz-19

Readme

MH-Z19 CO2 Sensor

With this node you can read the CO2 values of your MH-Z19 CO2 sensor. You can also use this node to configure your sensor.

Installation and Prerequisites

On Raspberry PI there is the serial console default on your serial port. Disable it to use it with your MH-Z19 CO2 sensor as described in the official docs https://www.raspberrypi.org/documentation/configuration/uart.md

Connect 5V (PIN 2 or 4) to Vin of CO2 sensor.

Connect GND (eg. PIN 5) to GND of CO2 sensor.

Connect TXD (PIN 8) to Rx of CO2 sensor.

Connect RXD (PIN 10) to Tx of CO2 sensor.

Usage

Set msg.payload to getCO2 to get current CO2 values or to ABCoff to disable error prone automatic calibration every 24 hours. More in the node’s help tab.

License

GPLv3