Playing with hardware

My original multimeter failed me. It wasn’t either the battery or the fuse so I revisited Radio Shack and $21 later, I got a new one.

The drum pad just houses a trigger.

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So I wired a drum pad and a drum pedal to a 9v battery and attempted to measure the voltage:

The pad seems to vary in voltage when it’s hit. It doesn’t fluctuate when it’s not hit.  I’m quite willing to accept that wiring up a 9v battery is less than ideal here but it’s indicative of the fact I *will* need the ADC.

The drum pedal really acts as a switch so an ADC isn’t required here.

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