Hey all -
I want to count down using two 7 segment displays, like 20, 19, 18, 17...to 00, and then reset to 20 when I push a button.
I've been searching these forums and the internet for some good examples of doing this with the Arduino using the fewest pins possible. But most are the 4 digit variety and I don't know if that solution would be the same or if because I am using just 2 digits there is an even easier approach.
There seems to be a 1000 ways to do this, but because I am still rather new to this I don't know which approach would be best (use fewest pins possible, take up as little memory as possible).
Any general pointers?