On Tue, Jul 12, 2011 at 1:04 PM, M. Adam Davis wrote: > I created a free kit that kids can put together to make a pressure > sensitive switch using common household items. =A0It was a big hit at a > mini maker faire, and now I'm bringing it to the Detroit Maker Faire. > Each person that wants one can assemble it there or take it home and > make it for free. That's really clever, but I am having trouble figuring out how the materials cost for each switch is $1.00 even when materials are sourced in low volume. Also, does the switch conduct when pressed in a location where the fabric is not cut? My gut feeling says that it won't, but that could be wrong... In any case, I went to my recycle bin and pulled out some cardboard and wired up a 4 x 4 row/column keypad in about 15 minutes. Works great! I can definitely see expanding this to much larger switch networks. ;-) -p. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .