Can an Arduino handle 36 inputs?
I want to make a Learning (?) Board for my son that has 36 individual buttons (A-Z and 0-9) which will play unique and specific *.mp3 files (recordings of mom or dad saying each letter/number). Is this possible?
I would imagine that the easy answer is to use several Arduinos, but I'm also looking to use what I already have without the expense of buying more boards.
Thanks for any advice you can give!