Car mmobiliser safety - Electronic Circuits Projects Diagrams Free

SimonW · 3rd February 2006, 09:48 PM

Dear All,

I have searched and read the forums regarding home made car mmobiliser.

Being experienced in electronics, I will be able to put some relays in series with the cars starter soleniod and ignition.

I will be using the wonderful PIC to control relays and to have access control.

How can I ensure that the relays will not revert back to the immobilised state while I am driving??.

Is there any other signal in a car which only becomes live when the car is running that I can incorporate into the PIC cct??

Cheers

akg · 4th February 2006, 05:27 AM

Quote:

Originally Posted by SimonW

Is there any other signal in a car which only becomes live when the car is running that I can incorporate into the PIC cct??
Cheers

what is meant by 'running' , engine on or car moving?
engine on->ignition signal/alternator
car moving->some use electric signals for speedometer

Cortex · 5th February 2006, 02:04 AM

hello
i think u sould speacial automotive parts.
or just add a triac in serie with the ignition key(also if ur pic turn crazy , the car can still running but cannot be restarted)

1Steveo · 5th February 2006, 03:46 AM

Use the oil pressure.

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3rd February 2006, 09:48 PM	#1
SimonW	Car mmobiliser safety Dear All, I have searched and read the forums regarding home made car mmobiliser. Being experienced in electronics, I will be able to put some relays in series with the cars starter soleniod and ignition. I will be using the wonderful PIC to control relays and to have access control. How can I ensure that the relays will not revert back to the immobilised state while I am driving??. Is there any other signal in a car which only becomes live when the car is running that I can incorporate into the PIC cct?? Cheers

5th February 2006, 02:04 AM	#3
Cortex	hello i think u sould speacial automotive parts. or just add a triac in serie with the ignition key(also if ur pic turn crazy , the car can still running but cannot be restarted)