![]() Below, you can find out exactly why this is true and how you can use these devices on an Arduino. More information on how to use the MAX7219 is on its datasheet. So this display has total of 16 pins to control the LEDs. Arduino Download the "LedControl" Library on the Arduino IDE Software or Github, Select File, Examples, Find the library name, Then click "LCDemoMatrix" Or just paste this code. Connecting the MAX7219 module is very simple if you have the FC-16 module, you just need to connect four wires to the Arduino and connect 5V 1A external power to the module, and you are done. Data, clock and load pins are used similar to the 74595 data, clock and latch pins. ![]() ![]() MAX7219 supports flicker free displays as well as cascading displays. What pin on the Arduino connects to the LOAD/CS pin on the MAX7219/MAX7221 # define LOAD_PIN 7 /** * Transfers data to a MAX7219/MAX7221 register. ![]()
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