The code is for directly controlling the LED matrix (I had made a 10X8 matrix) through Arduino Uno. Here, I have used multiplexing which makes the task a bit difficult to understand at first.

CLK (Clock) pin of the MAX7219 to Pin 13 on the Arduino Uno Upload the provided Arduino code to create a smile on the LED matrix (you can use the provided code in your own Arduino IDE or Wokwi).

Arduino has launched its next generation of UNO boards, introducing a 32-bit Renesas microcontroller and Espressif ESP32-S3 module, one-click cloud connectivity and plenty of I/O plus a 12×8 red LED ...