I understand that ultimately you will use the Pro Micro's ability to do a USB-MIDI connection, so maybe add printing a message to the serial monitor when the LED goes on.Of course many here could hand that to you, but the point is to burnish your programming chops a bit, you will not regret slogging through whatever it takes to accomplish this simple task. write a sketch that turns on and off one LED (with series resistor) attached to an output pin by each press of a pushbutton attached to an input pin.In the meantime, your life will be considerably easier (!) if you slow your roll a bit and. I can't think of the two 'old timers' who usually show up when this kind of thing is on the table. OK, I hope we can scare up someone who has done exactly (or close to) this. One idea is to take anything that looks like it may be the mapping and challenge it by just testing a few keys… what if it turned out there was some kind of standard or common approach and your keyboard matches exactly the on in the project? Too bad you aren't my neighbor, srsly, enjoy it. The diodes mean that to identify a cross point you would need to test with the red and black, then test with them switched until you start finding columns and know which way the diodes are wired. Start by knowing it will prolly be very similar.Īnd in case your mind has raced to the conclusion that… yes, you will be tracing wires or holding down keys and putting your meter all over that connector, so get comfy and make a plan to be systematic about it, keep track of what you learn. Your keyboard is almost certainly a matrix arrangement, you'll have to identify all the rows and columns. Look at the keyboard in the project you linked. Let's just say I would find spending the time it will take you with an ohmmeter to figure this out to be fun.

Midi number note chart