total NOOB here.
trying to make a simple LED sign for my wife for mothers day. So it says:
HAPPY MOTHERS DAY!
Lighting each character separtely or whatever. So I don’t need to control each led separately, just each character separately. So what I don’t how to do is add current so that each letter can be made up of however many red LED’s it takes to make that letter in a perf board.
I have a mega, but was going to use a Duemilanove for this.
It will also be running a charlieplexed “open heart” if you know what that is. Which uses 6 pins I think.
Any advice, pointers, tips or tricks is greatly appreciated. I got 4 days to pull this off.