ESP8266 / NodeMCU MQTT Sensor and Display Demo
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Elliot Williams
Elliot Williams added third reboot state
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ROM Cleanup. May 11, 2016
display added verbose printing to WiFi connection May 12, 2016
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Simple sensor and display code for an MQTT demo series on Hackaday.


display is an RGB LED that tells you the temperature, based on data from sensor. The whole thing runs on NodeMCU, and the ROM version I used is here too.

Read the articles, set up an MQTT server (or use, and flash up two nodes. You're on your way to independent home automation.