Patrik, If what you describe below is true, then the best theft deterrent would be to come up with a skin or coating that would make your $1100.00 pro machine look like a derelect from the junk yard. That way, no one in his (her) right mind would touch it. Right? Regards, Jim On Wed, 30 May 2001, Patrik Husfloen wrote: > > Well, uhm, > no, I am not getting the bikes back. > Except for the one time where they cought the theves. > And this isn't just for my bike, bike theft is big problem here and the bike doesn't have to be expensive to be stolen, as long as it resembles a mountainbike and is fairly shiny you can say goodbye to it if you ever were to leave it outside. > > ----- Original Message ----- > From: "Alexandre Domingos F. Souza" > To: > Sent: Wednesday, May 30, 2001 3:38 AM > Subject: Re: [EE]: A fool-proof bicycle alarm > > > > >I've spent some long hours trying to figure out a way to construct a bicycle alarm that isn't subject to kids poking at it and having it go off for fun, or just because someone bumped the bike by accident. > > > > Remote control anyone? One or two turns of the wheels, comparing speed of runaway??? GPS module in the seat??? :oD > > > > >I also want the alarm to either 1) hurt like hell, 2) hurt like hell, 3) make a lot of noise that hurts like hell. > > > > Should it be connected to mains? :o) > > > > >I've had my bike stolen about 7 times already and I'm starting to get sick of it, only once did the theives get caught, turned out they were drugged out losers, at least they got sent to jail. > > > > And you got it back? Wow, you don't live in Brazil :o) > > > > >My bike isn't exactly cheap, about $1100 (USD), so spending up to $60-70 wouldn't be too unreasonable. > > > > MAN! Go out and buy a BMW! :oPPP > > > > >The last time it got stolen I got really pissed off. > > > > Who don't? > > > > >I left it outside the house for about 2-3 h before I noticed it was gone, so I called the police etc. > > > > I wouldn't leave a $1100 cycle outside the house. > > > > >My dad suggested strapping explosives to it, which isn't a bad idea if it could be made 100% sure no inncent people got hurt or that it wouldn't destroy the bike. > > > > Ok, back to the real world. > > > > How is your bicycle stolen? Is it thrown inside a van or the mf thief mounts on it and go cycling? For the cycling type of robbers, you can put something in the velocity meter (yep, a $1100 bycicle must have it, eh?) and count 2 or 3 turns. If the alarm is activated, and it sees 2 or 3 turns in more than a second (the man must be running - children or someone who is bothered by the position of your bike will not run with it - will only change it's place slowly), it fires the alarm. But how would it hurt and sound like hell? If you put a power tweeter, surely it will be kicked off before you ever hears it. Of course it could trigger a remote alarm, but people wouldn't see. A GPS antenna below the seat with a simple transmitter, would transmit it's position to your "remote module" or call police with a voice synthesizer (ISD chips anyone?) transmitting via voice the latitude and longitude of your belowed bike. > > > > Of course it's darn crazy. As it is crazy to have a $1100 bike. But it's YOUR money, not mine. I have a $30 bike and go everywhere with it :o) Your mileage may vary :o))) > > > > Sorry the sarcastic post, but here you have the solutions, and I can't stop laughting :oD > > > > -- > > http://www.piclist.com hint: The PICList is archived three different > > ways. See http://www.piclist.com/#archives for details. > > > > > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body jim@jpes.com -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body