On Thu, May 3, 2012 at 9:10 AM, Electron wrote: > At 20.46 2012.04.30, you wrote: > >http://www.youtube.com/watch?v=3DcTUOhYcw4ZY > > wow.. but how does the system "understand" that it's meat and not wood? > There's a couple of possibilities for the underlying mechanism, but basically it puts a static charge on the blade or between the blade and the other metal parts. When it sees that charge change because of something conductive... Mechanically, it has a fairly stiff compression spring tied down with some thin wire/foil tape and it dumps a large cap through it to burn the wire when they want to fire. It has a TI MSP430 dsp chip in it... -Denny --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .