I am trying to use rpi-rgb-matrix to make a count down timer for my archery range. I need to be able to set for 4 minutes (we have some other rounds with different times), also a stoplight style red, yellow, green lights down the right side. Then on the bottom we will have a A B C D to show which line is supposed to be shooting. I have the Adafruit bonnet for the display and have been able to get the examples to run. I have a remote control that I am going to interface with GPIO to start the timer, change lines, and control the stoplights.
Does anyone have some examples to point to ?
Thanks!