Ok this is getting seriously weird. Let me just show you, cuz you need to see it to believe it:https://www.youtube.com/watch?v=6h_6V134Ty0I've got me an air piano! Now seriously, what the heck!? Why so much induction?
Only issue I need to resolve now is how to reverse keyboard matrix, as it only works the wrong way.
Even when I put resistors to either pull-down or pull up configuration.