On Sep 23, 2005, at 12:54 PM, alan smith wrote: > Essentially I want to wake up the circuit if the box is picked up. > So I guess more of a movement sensor. The standard in toys is a spring, fixed at one end, as one contact, an a central rigid conductor as the other contact, but you'd be very challenged to make such a thing respond to being "picked up" (as opposed to shaken, or thrown against the floor.) Tilt sensors using mercury or balls likewise require tilting. BillW -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist