Ok, so I have put together a 2 minute countdown timer using an Arduino Uno, Max7221, and a 4 digit 7 segment LED display (also has periods and a colon). However I can't figure out how to make the colon light up. Any suggestions? #include <LedControl.h> //We cant do anything without importing a suit…

Colon on 4 digit 7 segment display

graynomad May 17, 2011, 7:28am 6

These displays are a PITA, the degrees led and the colon all wired in parallel so you have to physically blank out L3 with a marker or some tape or something.

Rob

Topic		Replies	Views
How to show the two dots on 4 digit 7 segments display Displays	4	8097	May 6, 2021
Problem using 4 digit 7 segment LED display LEDs and Multiplexing	3	2019	May 6, 2021
[Solved] Programming help Programming Questions	6	415	May 5, 2021
4 digits TM1637 Red Digital Tube LED Display Module With Clock for Arduino guide Displays	13	32965	May 6, 2021
3 of my 4 digit 7 segment display are very dim LEDs and Multiplexing	32	5817	May 6, 2021

Colon on 4 digit 7 segment display

Related Topics