On 13/07/2011 09:13, Oli Glaser wrote: > I didn't notice any claims of it being a "big deal", or anything other > than a switch - just a way to get children interested in electronics. > Unless I'm missing something, it seems like a nice idea to me... Something better done at home using it to turn on/off a door bell or a=20 dismantled torch. IMO not worthy of fund-raising. Or "kits". Everyone=20 has paper, foil and something that can be cut as the spacer (egg carton=20 lids, jiffy bag, cut up washing up sponge) etc. Nor does it warrant mentioning of Arduino. In the late 1950s on TV the BBC was showing young kids how to make a one=20 valve battery radio (a predecessor show to Blue Peter, though both ran=20 at same time for a short while) . A switch is a 2 minute novelty. Yes=20 it's cute. But not worth funding. Nor does it do very much for interest=20 in Electronics. So after fifty years we have progressed from getting=20 kids to build a radio to making a switch. I taught 5 of my kids how to make a radio (winding the coil) before they=20 Teenagers. Also how to read schematics. Interesting Chemistry using simply stuff from kitchen. Boats with engine made out of loop of broken telescopic aerial (bent=20 with heat from a cigarette lighter, no one here smokes, but I always=20 have one or two for Macgyver use. Got them to saw and nail their own gang hut out of old palettes (before=20 Teenagers). Planting flowers and vegetables from old enough to talk Made shadow prints in bathroom with objects, and a box of photo paper Let them take photos and enlarge and develop using a Slide projector as=20 Enlarger. Then later soldering and how to design Vero layouts. Two are Applications Engineers in Analog Devices. Both can do=20 Electronics, Desktop programming, Embedded programming etc before end of=20 1st year at college. One has Masters & PhD One is Environmental Scientist One did Landscape Architecture and now makes Warhammer dioramas and=20 models as well as rasiing kids One is starting Uni in Autumn doing English and New Media I know about kids. This "project" is the sort of thing I'd do in an odd=20 20 mins after they had already done light bulbs, batteries and regular=20 switches, out of scrap already in the house. Part of the "fun" would be=20 obtaining and experimenting with different ingredients, not using a=20 "kit" . Not something I'd fund with donations. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .