Zigmund:
The device is simply sensing the contact between the ends of those 6 wires, and tells which two wires are currently touching. Is it possible that the wires pick up so much by induction, that a shot knocks the MCU (ARM SAMD21G18) unconscious?
So the aim is to build a device that monitors 6 long wires, and the remote ends of those wires are initially floating. And the device needs to be able to detect whether or not any PAIR of wires (at the remote end) touch each other, right?
Does the device need to also be able to determine if say triplets of wires are contacting each other?