I refer to the 3 zone cymbal from RyoKosaka’s project as image 1 & image 2. I’m using the 74HC4067 16 channel multiplexer to connect to the 6.35mm jack, piezo x2, edge switch and Arduino UNO. I’m poor in knowledge of circuit, draw a circuit as image 3, is the circuit wiring right?
Sorry I cannot read frizzy pictures and the hand drawing picture, nice try but not much use to me. Also this circuit is missing power. Try this link it will help a lot: How to Read a Schematic - SparkFun Learn