esp8266_lua_mqtt_ds18b60 NodeMCU on the ESP8266 running MQTT for data delivery and a DS18B60 Tested with NodeMCU 0.9.5 build 20150318 powered by Lua 5.1.4 After uploading ds18b20.lua from the NodeMCU modules directory, you must compile it with: node.compile("ds18b20.lua")