Here you need to put the number of 8×8 dot matrix displays you use.Ī single MAX7219 IC can control only one 8×8 LED matrix and counts as one device. If you have a Generic module use GENERIC_HW, and if you have an F16 module use FC16_HW. FC16 module comes with a blue board and an SOP MAX7219 IC under the LED matrix. The generic module comes with a green board and a DIP 24 Pin MAX7219 IC. The most common hardware types are the Generic module and FC16 module. #define HARDWARE_TYPE MD_MAX72XX::FC16_HW The below line defines the type of hardware you use. The first thing you need to change is the definition of hardware type. In this process, all the cathodes are connected together row-wise and all the anode is connected together column-wise.īelow you can see the schematic diagram of an 8×8 LED matrix multiplexing. But with the help of LED multiplexing, we can control the same amount of LED using only 16 data pins. Basically, the F-16 module is four MAX7219 8×8 matrices connected serially. The most common MAX7219 LED display is the generic module which has 8×8 LED and the F-16 module which has 8×32 LEDs. In this project, I will use a MAX7219 Dot Matrix LED Module to avoid ugly wiring.īelow you can see an 8×8 dot matrix LED display with a MAX7219 driver. If you purchase the 8×8 LED matrix display and MAX7219 IC separately you need to connect them together. MAX7219 is a very popular LED driver for 8×8 LED matrix display. 8×8 dot matrix LED display comes with or without a MAX7219 driver.
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