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Thread: rfid keyless ignition

  1. #1
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    rfid keyless ignition

    This might be a little out of place for this forum but lots of hardware development threads have inspired me....anyway im going to be making a keyless ignition system for my 06 scion tc soon and the main thing that will activate the system is going to be a starter relay vehicle immobilizer that works off of a "proximity" remote. www.nostart.com has one that is perfect I believe but there is nowhere to buy it on there site. I'm really having a hard time finding this piece to my puzzle. Does anyone know of a similar product that might work for this(preferably inexpensive)?

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    Quote Originally Posted by jayrod7387 View Post
    This might be a little out of place for this forum but lots of hardware development threads have inspired me....anyway im going to be making a keyless ignition system for my 06 scion tc soon and the main thing that will activate the system is going to be a starter relay vehicle immobilizer that works off of a "proximity" remote. www.nostart.com has one that is perfect I believe but there is nowhere to buy it on there site. I'm really having a hard time finding this piece to my puzzle. Does anyone know of a similar product that might work for this(preferably inexpensive)?
    I would be very interested in what you find on this project. I might be interested in putting the same thing our Scion TC. There are several solutions for wireless entry, but I can't seem to find the one a customer used in my notes. Have you looked into the scion tc specific wiring issues? I imagine the scion will be very easy to mod.

  3. #3
    FLAC WuNgUn's Avatar
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    Have you looked at the Ebay? Sombra K9 and others...

    http://shop.ebay.com/?_from=R40&_trk...All-Categories

  4. #4
    Variable Bitrate Superduck's Avatar
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    Not sure if you're wanting to build your own, but there are several options for that. You can interface an RFID reader with an Arduino or any other stamp/whatever.
    Here's one
    Here's another one
    Some dude's project
    Arduino Info
    NoStart Vendor (Looks loike no online orders available)

    Hopefully there's enough info to help you out.

    Cheers,

    Kris

    If none of that helps, start here.
    How Much Horsepower Can I have And Still Go To Heaven?

  5. #5
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    I'm interested in this as well. My Scion car club and i have been trying to figure out how to do it for the past year. I'm interested to see if you can make it work.

  6. #6
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    Wow its so good to see alot of people interested lol. Wish I had time to put together a kit to sell... anyway I've got an idea that will make it a bit easier for most people to put together.


    ^^^my basic thoughts of how the system will be set up. The latching relay is made by directed electronics and it will keep the car running while you drive. could have maybe MADE a latching relay but i wanted that piece to be pretty reliable. The push button basically gives a negative pulse to activate the latching relay as well as the remote start(built into the aftermarket alarm system). I believe most newer remote start systems have a neg. trigger wire to initiate remote start. Once the car is started you will hit the brake pedal sometime soon which will kill the remote start and let the vehicle run off of the latching relay. At the end of your drive push the start button once more and it will send a negative pulse to kill the latching relay. The "Relay Box" that you see in the picture is just 4 regular automotive relays that go to ignition accessory etc. The start button wouldnt get a negative until the proximity keyfob for the immobilizer was in range.



    I JUST came accross the k9 sombra today. It seems like an AWESOME solution for this and is very reasonably priced.It is just a little bulky.


    I have a couple concerns about this system. One is that it would literaly just take a small negative pulse to hotwire my car lol(although you would have to know how it was setup....I'm really not that worried about this though). Also I would want to shorten the range on the rfid{when I'm home my keys are less than 25 feet away when im in the living room) Thought about just ripping off the antenna and putting the reciever down in the dash with the main unit although im not sure that would do the trick. The last thing is the remote start "process" that is carried out by most remote start systems takes more than a couples seconds and im impatient.


    Another thought i had was if you are a scion owner you can take the proximity keyfob guts and put them in your stock key/keyfob case. This will work for me because I will have a remote start system with alarm and keyless entry so no need for the factory fob.

    **Dont forget the one thing you must do is remove your steering lock.<<<<<not looking forward to this lol.


    Any ideas or thoughts would be greatly appreciated.

  7. #7
    FLAC WuNgUn's Avatar
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    I built my own setup (which used a start and stop button) and posted the build/schematics on my car forum...
    I made my own latching relay, and one time a wire came lose, and I lost the latch function, and then I couldn't start the car! I did make it home using the cars remote starter without any problems (disconnected the brake disengage)...

    Read that thread here:
    http://www.focusfanatics.com/forum/s...d.php?t=191224


    A fellow forum member took inspiration from my design, and decided to design/build his own setup using the K9 as an immobilizer...and I bought one from him...just waiting for delivery.
    His design is simpler, with less 'moving parts', and expoxy coated for reliability.
    He was going to do a small production run, but his wife talked him out of it, for liability reasons, so....

    Here is his build thread:
    http://www.focusfanatics.com/forum/s...d.php?t=200742

  8. #8
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    i think im going to use an additional dei 611t for the starter crank. It can also be used as a timed output from 0 sec to 100 sec. they are roughly $20/piece so 40 + 35 for the rfid system and you can get a relay box for around 20. so total price is less than 100 without the push button. not bad for a rfid keyless ignition.

  9. #9
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    Thats a great price. now just to do it with out ruining your electrical system. Can't wait to see it finished. I'd like to see a walk through if possible.

  10. #10
    What can I say? I like serial. Curiosity's Avatar
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    Consider redirecting non-enabled big red START button presses to the alarm trigger or even arm and trigger because you know that's the first thing that will get touched.

    The thing I hate most about those active RFID setups is the range. If your keys stay in range at home and there's any kind of chirps, it's going to drive you nuts. Interference causes it to think it went out of range for just a second. It might only happen once a day or probably more as the battery gets low or if it's on a common frequency.

    Just make sure you design it to disable starting only so a low battery/IRF can't disable the ignition while it's engaged.

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