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@@ -4,6 +4,8 @@ This repository contains a Lua module (`mh-z19.lua`) as well as ESP8266/NodeMCU
MQTT gateway application example (`init.lua`) for the **MH-Z19** carbon dioxide
(CO₂) sensor.
+![](https://finalrewind.org/projects/esp8266-nodemcu-mh-z19/media/preview.jpg)
+
## Dependencies
mh-z19.lua has been tested with Lua 5.1 on NodeMCU firmware 3.0.1