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Topic: Acoustic Drum Trigger Sensor (Overkill?) (Read 3611 times) previous topic - next topic

kriista

So I've used this setup before on just a plain piezo on the table:


http://leucos.lstilde.org/wp/2009/06/piezo-transducer-signal-conditioning/

It worked great for just controlling a solenoid (what I was using it for).

I'm now building some drum triggers into my acoustic drums to drive an Arduino which will send MIDI data.

I've seen most drum triggers use a foam cone similar to this:


http://www.electricdrumcenter.com/4-foam-cones-trigger-for-diy-electronic-drum/

I plan on incorporating some threshold control into the circuit (with a pot), but I want the triggers to be as sensitive as possible. The circuit above seems to clean/condition the signal a bunch, but that's just a raw piezo being used (as are most other arduino triggers I've seen on here).

I guess it's more about if anyone has used one of those foam cones in a trigger circuit.

DrSpeed

I've had good luck using these pressure sensors as drum triggers. They are available from Sparkfun.

I read the pressure, determine the maximum pressure of the hit, send that to Max4Live, convert the pressure into a midi velocity and generate a midi note. All that midi nonsense could be done right on the arduino as well.

http://www.flickr.com/photos/51276066@N00/5779463130/in/photostream


kriista

Aren't those kind of pricey? Not to mention size wise, on an acoustic drum head, it would have a serious muffling effect.

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