"CO2 Sensor MH-Z19"

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Introduction

The ESP module can read the MH-Z19 CO2 Sensor reading the serial protocol.

Hardware

Mh-z19.jpg

The sensor needs to be connected this way:

Function:  Pin MH-Z19	    ESP8266
VCC            6            5V
GND            7            GND
TX             2            1st GPIO specified in Device-settings
RX             3            2nd GPIO specified in Device-settings

Software

Plugin is based upon SenseAir plugin by Daniel Tedenljung info__AT__tedenljungconsulting.com Additional features based on https://geektimes.ru/post/285572/ by Gerben (infernix__AT__gmail.com)

ESP Easy

Use the device tab on the ESP Easy webinterface and create a new task by editing one of the available tasks. Select "NDIR CO2 Sensor MH-Z19 [TESTING]" from the dropdown box.

Select the GPIO Ports where you connected the RX and TX lines to.

Mh-z19 settings.jpg

Optional settings

Use of formulas

Use of value names