=20 How about a frequency specific, high intensity feedback generator. When it detects the overly loud THUMP of a car with too much bass for itself and the 5 cars around it, it emits a pulse which may make normal speakers tick, but will make the voice coils in a bass speaker throw much harder than they should thereby causing them to rip the speaker cone. I have been pondering that one for a while now. -----Original Message----- From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Dave Smith Sent: Monday, June 14, 2004 2:53 PM To: PICLIST@MITVMA.MIT.EDU Subject: Re: [PIC:] Project suggestions... HI Lawrence do u have one that shuts up the neighbours dog???.....perhaps a sound activated high pitched alarm that causes mild pain to the dogs ears everytime it barks???? this should teach the dog to shut up eventually. or even better, these new Toyota cars have their alarms activate the horn instead of the hazard lights, disturbing my sleep at 5:30am.......now come up with something that will cause the alarm to go off automatically when the neighbour activates it, thus forcing them to switch it off at home during the night!!. Hmmmm I could think of so many more devious ideas. regards New - to - pics Dave Smith Cape Town South Africa -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu