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ESP8266-Powered LED Matrix Clock

Building an NTP-synced LED matrix clock using an ESP8266, a 3V–5V logic level shifter, and a MAX7219 LED matrix module.

February 2, 2017|Aditya Bawankule

ESP8266HardwareIoTLEDArduino

Download the code here: https://github.com/Legorobotdude/esp8266-LED-matrix-clock The circuit consists of an ESP8266 as the brains and wifi connectivity, a 3v-5v logic level shifter in order to interface with the 5V led matrix, and the matrix itself. Additional debug circuitry in the picture includes a USB Serial Converter, and an Arduino Micro to supply power.