The MAX7219 is a chip that is used to drive LED displays. It can control up to 8 digit displays, 64 individual LEDs, or a combination of both. The MAX7219 allows you to control the brightness and intensity of the LEDs, as well as create various types of display patterns and effects. It is commonly used in applications such as LED displays, digital clocks, and other types of electronic projects where a display is required.Disclosure: This post contains affiliate links. If you click through and make a purchase, I will earn a commission, at no additional cost to you. Read my full disclosure here.