ESP8266 MAX7219 Dot Matrix Display
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.
ESP8266 MAX7219 Dot Matrix Display – [Link]