“A MAX7219 driven Display, controlled by an ESP8266 SoC and MQTT This project describes how to connect a MAX7219 to an ESP8266 Chip and let it act as a MQTT client. Its basically my ninHOME Node Firmware where you can optionally add a MAX7219 Display.
The Firmware is completely based on Sming Framework for ESP8266 and is hopefully easy to use.
I will upload some binaries which you can upload without the compiling.
Formerly i use this firmware and its options for my SmartHome integration with ioBroker from where I script everything i want to control or measure. And it isn’t completely ready, so if you want to contribute something …”