My diy 3 zone e-cymbals use one switch for edge and choke. In Roland and Yamaha 3zone cymbal pads they use only switches with one piezo for velocity readings. When you hit edge of cymbal it activate edge switch + piezo that gives velocity readings and cymbal produce edge sound. After that stroke when you press edge switch it sends aftertouch for choke. On my cymbals edge switch gives choke on every zone. I have piezo/piezo/switch and edge switch choke even bell zone which is on diferent input of md.
It can probably be use for continius controll. This one can be used for hh controler:
http://store.comet.bg/en/CatalogueFarne ... ct/639438/ but 20% tolerance is a little big, maybe some with better accuracy.
This sensors are used in laptops for scroll up/down position plate.
You can have much fun by makeing some kind of midi instruments with this.
			
		
