Wemos D1 mini + MH-Z19 CO2 sensor housing
Description
A small box for a Wemos / Lolin D1 mini (ESP8266 board) on the bottom and a MH-Z19B CO2 sensor on top of that. The D1 mini runs [ESPEasy](https://www.letscontrolit.com/wiki/index.php/ESPEasy). Every 30 seconds it sends the latest CO2 measurements to my Domoticz server. Domoticz then sets the ventilation of my home to a certain speed.
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