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  • Proximity sensing, automatic door unlocking!

    Hey, I don't think this has been mentioned, but I noticed this the other day. It's only 4 days old as of now, and a GREAT idea!

    Basically, using a NIKE+IPOD device, you hook the iPod receiver into a serial board and hook it up to your computer (or microcontroller!) and detect when new nike tags are within range.

    Apparently, it works from like 25 feet away, uses very low power, and lasts a very long time. They're also cheap on eBay!

    I'm going to use this device (when I get money) and build a PCB with an iPod connector, a USB connector, a microcontroller, and some output headers such that when a tag is within range for X amount of time, it outputs high on some of the pins. This device is really low power and does not require a computer. Using USB though, you can tell it which keys to recognize!

    What do you guys think?
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  • #2
    I think I have that feature on my Compustar alarm but I turned it off because it's annoying. If your car's in the driveway and you're somewhere in the front of the house, it'll lock/unlock every 30 seconds as you move around. Seriously, if you like that, go pay $200 for an alarm that does it without having to build something.
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    • #3
      Originally posted by Maheriano View Post
      Seriously, if you like that, go pay $200 for an alarm that does it without having to build something.
      The whole point of this is so that I don't have to buy a $200 alarm.
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      • #4
        how about a $48 alarm?
        http://cgi.ebay.com/ebaymotors/K9-So...Q5fAccessories

        i found this alarm a while ago, because i wanted to take it one step further and install a pressure sensor on the driver seat, so that when the alarm correctly disabled with my remote then the sensor would be given power and when the sensor activated from me seating on it, it would enable IGN2, then all i would have to do is hit the start engine button.
        i still have all the paperwork and diagrams but the thing that threw me off is that i would have to install a bypass module for the code that my key give to the car

        or $18
        http://cgi.ebay.com/2-RFID-Reader-tr...%3A2|294%3A200
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        • #5
          The $48 one has buttons, not what I'm looking for. The $18 one requires you to be within 3" (which I suspect the first one requires too if you don't use the buttons on the fobs).

          I posted this because I remember there being a TON of threads about using BlueTooth to gain entry to a car.

          My intentions are the same as yours, Injector. I want pressure sensors in my seat (easily made with a special microchip foam and aluminum sheets), and a large START button on the dash. I would also have to install a bypass, however, I only want the bypass to get power when the "key" is within 10 feet of the car for 10 seconds constantly AND the pressure sensor is active.

          That way, people can't just steal your car
          2001 Mustang Convertible Worklog
          Indigo Custom Frontend (Flash/Delphi)
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          Qube v1.3 Now Available at the mp3Car Store!!!!!!
          The simplest IO controller you'll ever use!

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          • #6


            they have one button in case you want to turn off the RFID proximity sensor

            "RFID SYSTEM FEATURES:

            With the new RFID system, the remote control functions become automatic. The system will automatically lock and unlock the vehicle's doors when you come within range, as well as activate the car's anti-hijacking feature (if programmed).

            All of this is possible without having to press ant buttons. Or if you prefer, the RFID feature can be turned off, and the alarm may be operated conventionally by using the remote controls."
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            • #7
              Sounds like a nice idea at first. Only thing I can say is that the newer corvettes (and some of the older ones) have that feature and a lot of people disable it.
              Seems its annoying to a lot of people to have it locking and unlocking whenever you move aound the car. You can shut it off if you are going to be washing it, or working on it, but then ya have to remember to turn it back on. And obviously, you dont want to be leaving your fob in your pocket or on your dresser if the garage is under the bedroom :-)
              I mean its a neat idea, guess it depends on your particulat setup and how frequently you are near the vehicle.
              Good luck with the project.
              PDP1170/TRS80/Atari800XL/Amiga500/286/486/P2/P4/C2D/i7 still a newb (but an old newb, been doing this a while) working my way up to "Complete Newb"

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              • #8
                Originally posted by Jistari View Post
                Sounds like a nice idea at first. Only thing I can say is that the newer corvettes (and some of the older ones) have that feature and a lot of people disable it.
                Seems its annoying to a lot of people to have it locking and unlocking whenever you move aound the car. You can shut it off if you are going to be washing it, or working on it, but then ya have to remember to turn it back on. And obviously, you dont want to be leaving your fob in your pocket or on your dresser if the garage is under the bedroom :-)
                I mean its a neat idea, guess it depends on your particulat setup and how frequently you are near the vehicle.
                Good luck with the project.
                well for me that wouldn't be much of a problem because i park my car in the garage so if it unlocks itself no ones going to get into it.

                i know what your saying about the vettes, when i was a mechanic we had a costumer that dropped off his vette, i finished working on it and parked it, i locked the door, got out of the car and closed the door, all of a sudden the door unlocked itself, i spent about 10 minutes fighting with the car, until i finally called the costumer and he told me he left his key fob in the cup holder in case i needed.
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                How to speed up boot with buried features in msconfig

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                • #9
                  i found the manual for the k9
                  http://www.caralarm.com/manuals/K-9/Sombra.pdf
                  Scion CarPC

                  Bluetooth Audio Gateway Tutorial

                  How to speed up boot with buried features in msconfig

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