So I'm working on an Arduino build that will take incoming drum hits (read via piezos mounted on a drum) and play back (via solenoids) patterns on the drum.
I'm thinking push solenoids, with a little head on them, similar to this:http://www.logosfoundation.org/instrum_gwr/snar.html
With push based ones I can simply have it 'poke' the head, and that's that. Rather than having a pull one mounted with a stick/lever.
I ordered a 12VDC Black Knight solenoid to test with. This one:http://uk.farnell.com/ped/120-420-620-620/solenoid-tubular-push-12v/dp/4207427
For one, it's tiny/wimpy. But beyond that, the plunger(?) falls right out. In the SNAR build linked above it looks like thats resolved by using gravity and a baseplate of some kind, but for my build, the Solenoid will be horizontal. I've seen some with springs in them, but after buying the wrong solenoid one time, I figured I'd ask around, before buying a wrong solenoid for a second time.
What solenoids are generally good for this kind of thing?