biometrics

I'm not understanding what 87A is being used for - you say your "switch" - what switch?

And this is exactly the setup that I'm talking about if you bump it hard enough it will unlatch - I know I've seen them do it.  Since you are relying on voltage to flow through the contacts to feed the coil if the contact breaks the coil deenergizes and the magnetic field collapses causing the relay to fall out.

Since I'm extremely bored and can't sleep I made a video -   http://www.youtube.com/watch?v=GLpVtDAb5o0&feature=channel_page

Admittingly I was hitting the relay with a little bit of force, but I don't believe it was more force then a relay could see in a vehicle moving 70 mph on a bumpy freeway.

And, it's not complicated at all - just a few signals to create!   :)  What gets complicated is when you start throwing in fun things like tach monitoring to control crank time and to verify that the motor is running!

This site must filter links to that site - I noticed after I posted that two of the letters were reversed.

I don't think orientation will have an effect on the relay as the relay contacts are spring return to the "home" position.  Therefore, they are always trying to return to that home positon regardless of which way the relay is sitting.  Also, bumps in cars turn to vibration and it's ultimately the vibration that causes the contacts to break momentarily.  I would think the best way to prevent shock from unlatching the relay is to loosely mount the relay in the car - the more it floats the less severe shocks are going to be to the body of the relay. 

I would, at least, throw a cap on the coil to require a ~.25mS delay before the relay shuts off - I do believe there is a relay diagram on this site to do that.

That fingerprint scanner looks cool - expensive but cool none the less!  I hope you get this in and working, I would love to see it!

As far as using your remote start I would think there would be ways to eliminate the "run time" feature.  The hard part is already done - the car has started.  You could possibly use the status output of the remote start and the brake input to trigger a system that keeps the ign and acc latched until you unlatch it.  You, of course, would have to disconnect the brake from the remote start and then the remote start would either a. time out or b. shut off due to over tach.  Or, you could build in an additional relay that would pulse the brake input of the remote start when you perform the take over.  There are LOTS of options, you just have to be creative!

has anybody tried any of this companys products. there not based in the us, but they make some interesting products. i havent seen any info anywhere else.

http://www.spetrotec.co.il/en/product_cat.asp

they make a car based fingerprint reader used as i guess a starter kill.

if anybody knows more about these units, or knows how much and where to get them please post.