Key Matrix

Yes, this MIDI controller has a 4×4 grid that you have undoubtedly seen way too many times. No, it doesn’t have RGB Will it actually get used? Probably not. But hey, its a great opportunity to learn some electronics! And implementing key matrices is not as trivial as you might think. Schematic First off, if you haven’t already, check out this excellent post by Dave Dribin to learn about ghosting and masking....