Free vehicle immobilizer design

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Free vehicle immobilizer design

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http://home.clear.net.nz/pages/dandavies/index.htm
 
"A Friend" <..> wrote in message news:3f02936e@clear.net.nz...
Free vehicle immobilizer design
Get a load of this guy!
http://home.clear.net.nz/pages/dandavies/index.htm

Another concept I've seen is to include a small window comparator circuit
Click to expand...
that if 'out-of'window' will partially add a series resistor to the ignition
coil. So if a thief tries to start the vehicle, it appears to be trying to
start, but won't actually fire. So hopefully the thief assumes it's a
rubbish vehicle and moves on. The resistor (23K) that brought the
comparator in-window was mounted inside a 5-pin audio din plug - the socket
looks pretty innocuous, but who carries a 23K +/- 2% around?
No doubt one of many ideas ...
hth
Neil
 
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Neil wrote:

"A Friend" <..> wrote in message news:3f02936e@clear.net.nz...
Free vehicle immobilizer design
Get a load of this guy!
http://home.clear.net.nz/pages/dandavies/index.htm

Another concept I've seen is to include a small window comparator circuit
that if 'out-of'window' will partially add a series resistor to the ignition
coil. So if a thief tries to start the vehicle, it appears to be trying to
start, but won't actually fire. So hopefully the thief assumes it's a
rubbish vehicle and moves on. The resistor (23K) that brought the
comparator in-window was mounted inside a 5-pin audio din plug - the socket
looks pretty innocuous, but who carries a 23K +/- 2% around?
No doubt one of many ideas ...
hth
Neil
Click to expand...
If you're going to use a five pin DIN, you might as well use multiple resistors
so that it will actually be really close to an electronic key.

Ofcourse, nothing will deter theft by flatbed.
 
On Thu, 03 Jul 2003 12:46:15 GMT, AC/DCdude17 <JerC@prontoREMOVETHISmail.com>
wrote:

X-No-Archive: Yes

Neil wrote:

"A Friend" <..> wrote in message news:3f02936e@clear.net.nz...
Free vehicle immobilizer design
Get a load of this guy!
http://home.clear.net.nz/pages/dandavies/index.htm

Another concept I've seen is to include a small window comparator circuit
that if 'out-of'window' will partially add a series resistor to the ignition
coil. So if a thief tries to start the vehicle, it appears to be trying to
start, but won't actually fire. So hopefully the thief assumes it's a
rubbish vehicle and moves on. The resistor (23K) that brought the
comparator in-window was mounted inside a 5-pin audio din plug - the socket
looks pretty innocuous, but who carries a 23K +/- 2% around?
No doubt one of many ideas ...
hth
Neil

If you're going to use a five pin DIN, you might as well use multiple resistors
so that it will actually be really close to an electronic key.

Ofcourse, nothing will deter theft by flatbed.
Click to expand...
Hmm.. steel and concrete 'hitching posts' for cars. Big chain and lock. Might
work.
 
Titus Pomponius Atticus wrote:

Hmm.. steel and concrete 'hitching posts' for cars. Big chain and lock. Might
work.
Click to expand...
If you lose the key, you're screwed. It will also be a municipal parking
enforcement division's dream. They can add another lock in addition to giving you a
ticket for parking violation and tell you that you're not getting your car back
until all the fines are cleared :)
 
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