Very cool Idea !!If i had the time I would love to have a crack at this tooAnd for feedback... ? what if you hold it next to a Marshall stack ? Do you have a video of this working ?
I was wondering, I guess it mis-reads if you leave your first finger down and fret on the same sensor with another finger, thus lowering the resistance as there is two contacted areas ? yes ? (a bit like if you try and put two fingers on your laptop mouse pad, it kind of averages between the points)
I see you are using 3 x 7805 regulators for the strips (to protect them?) the input to the regs is 5V, but you are trying to pull 5v out of them. I think these regs require somewhat more than 5v input to give a stable 5vout (like 7v or something). I see what you are trying to do but wonder why you need 3 1A regs ?If the overall resistance of the strip is 10k, the current flow will be <1mA, so you could easily run all three strips from one much smaller regulator.Also powering from USB may also have its voltage instability, I have measured some at 4.4V where 5V has been expected. Perhaps if you ran the board from 6V cellpack or a small power supply over 5V to the Vin/RAW pin of the micro board it may help to stabilise things up a bit plus give you the overhead Volts you need for your 5V regulation to the strips
And I can read the inputs through the Arduino IDE but I don't get similar results in the software.
I should be using (like a 1mA regulator?