How to control MAX7219 Led Matrix with ESP8266 Nodemcu over WIFI. – MYTECTUTOR
Stemedu 5PCS 8-Digit 7 Segment MAX7219 Digital Segment Module, Seven Section 8 Bit LED Display Tube for Ar-duino MCU/51/AVR/STM32 Raspberry Pi ESP8266 Nodemcu (Pack of 5)
How to Control MAX7219 LED Matrix with ESP8266 WiFi Module – eTechPath
MAX7219 Dot Matrix Driver Board for ESP8266-Wemos D1 - LED Dot Matrix Display | eBay