This repository contains NodeMCU Lua source code for an [MH-Z19 based CO₂ monitor](https://finalrewind.org/projects/co2-monitor-mhz19-ssd1306/).
It shows the current CO₂ concentration and MH-Z19 temperature on a 128×32 SSD1306 OLED and makes them available to Home Assistant via MQTT.
It can also publish readings to InfluxDB.
A CO₂ monitor with optional Home Assistant and InfluxDB integration implemented in NodeMCU / Lua.
It shows the current CO₂ concentration and MH-Z19 temperature on a 128×32 SSD1306 OLED, and optionally makes them available to Home Assistant via MQTT or to InfluxDB via HTTP.
