How is the MAX7219 Controlled by the Arduino? Therefore, they are super easy to wire, and, as you will see, easy to program. These modules interface to the Arduino using only 3 digit signals. This module can be purchased for a dollar or two from eBay or Ali Express. A typical MAX7219 module comprised of a single MAX7219 chip and eight 7-segment displays. Although I tried to code it as efficiently as possible, the logic may have been difficult to understand.Īlso, constructing the project was fairly tedious, with dozens of resistors and hook-up wires. There was a bit of tricky logic to translate each digit into the segments A, B, C, D, E, F, G plus additional logic to turn the digital pins on or off.
Previously, in part 1 of my blog posting Programming a 7-segment Display, using just Arduino digital pins (the hard way), we had demonstrated how to hook up a pair of 7-segment displays to an Arduino, treating each individual segment as a separate LED. Each 7219 chip can be used to interface eight 7-segment digits, or 64 individual LEDs. In today’s blog, I am going to show you the easy way to interface 7-segment displays – Using the MAX7219.
Menu Programming an 8 digit 7-segment display, the easy way, using a Max7219 14 February 2017 on Arduino, 7-Segment, shiftOut, MAX7219, DS3231, RTC, Display
