Difference between revisions of ""CO2 Sensor MH-Z19""
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The sensor needs to be connected this way: | The sensor needs to be connected this way: | ||
Function: Pin MH-Z19 ESP8266 | Function: Pin MH-Z19 ESP8266 | ||
| − | VCC 6 | + | VCC 6 5V |
GND 7 GND | GND 7 GND | ||
RX 2 1st GPIO specified in Device-settings | RX 2 1st GPIO specified in Device-settings | ||
Revision as of 21:21, 29 August 2017
Introduction
This Plugin in currently only available in the latest build on github, but should in the next official release
It may be needed to build a custom image with this plugin enabled, because this plugin needs lots of iram, which is quite limited on esp8266.
The ESP module can read the MH-Z19 CO2 Sensor reading the serial protocol.
Hardware
This Sensor can be bought from Aliexpress:
The sensor needs to be connected this way:
Function: Pin MH-Z19 ESP8266 VCC 6 5V GND 7 GND RX 2 1st GPIO specified in Device-settings TX 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.
