http://www.youtube.com/watch?v=Nnjh-zp6pP4So anyway, a gaming mate asked be to have a think about building a static grass applicator. Model train people have been using them for ages – you apply a static charge to the grass, and when you sprinkle it out onto the glue, it stands up.
Cool. So I built this voltage multiplier:
And you know what? It works great. I plugged that sucker into household 240v attached on end to some paper streamers and the other end to a wire on the end of a long stick, and blow me down if the paper didn’t move around when I bought the other wire anywhere near it.
(I put on clean underwear before testing it, and left my front door unlocked in case I needed to be taken to the hospital.)
Nice fat spark when I discharged it, too, after turning it off.
But darn it, my mate is not keen on anything I build being plugged into 240v at his home. He has a case, although it wasn’t me who nearly burned his place down last time we built something there. Just saying.
So, I need to drive it off a battery. The power needs to ripple, so I need some sort of oscillator. Been trying to build me a multivibrator (it’s what they are called, or as Katy Gallagher would say, it’s a word that people use).
Not having a lot of luck. Electronics is trickier than computing. Well, unless you are doing comms or UI, obviously. I’ll wander over to MHV Tuesday or Wednesday. Someone will be there to chuckle condescendingly at my naïvety and possibly get the thing going.
Should be cool.