As usual I’ll be using a NodeMCU board (I really did order a lot of them) which uses an ESP8266, but there’s no reason this would be difficult to achieve on an Arduino-based device.

[Sebastian] is using a NodeMCU but suggests that it could be pared down to any ESP8266 board — with similar cuts made to the rest of the electronics — but has this working as a proof of concept.

Discover how to build a real-time event notification system by integrating NodeMCU (Arduino) with Google Firebase and Laravel. This tutorial covers the complete setup, from hardware to cloud and ...