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Thread: GPS to cell phone output somehow ???

  1. #11
    Raw Wave
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    Yes I also seen those phone that supposed to know where you are. Not so sure how it work but I guess it can be used for that. The commercial tracking device I though you need to pay per months?

    But we want it cheap by using second hand stuff and free from subscriptions

  2. #12
    Maximum Bitrate skippy76's Avatar
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    Just connect your phone to the PC using data cable. Use software to handle SMS via the phone. Parse new messages received, and send responses accordingly. You could request all sorts of things by SMS!
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  3. #13
    FLAC mbkowns's Avatar
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    keep that idea moving I like it.

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  4. #14
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    Just connect your phone to the PC using data cable. Use software to handle SMS via the phone.

    As been said...it must be standalone unit and cheap.

  5. #15
    Low Bitrate gadget's Avatar
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    Quote Originally Posted by Ricky327
    Im already working on it as a project...heres my plan :

    The tracking phone then transmit this series of tones into the phone you use to call it...I home phone perhaps.

    On the phone you used to call it - tones is then heard representing the GPS data. A tone translator is then used to decode this tone back into the car locations.

    Of course all these tones are not heard everything happens electronicaly. A hand free cable for the phone can be used.

    The idea should work virtually with any phone. Hacking a phone to do things is too specific for a particular make and model.

    The good thing about it is you know your traking device is working by hearing the tones trasmitted. You can call it as much as you want without it running out of credit.
    Have you looked at the TinyTrak3 device? That sounds a lot like what we are talking about. It converts GPS NEMA serial data into packet radio data (for HAM radios) but I have been told it will not work for cell phones because the D/A converter and hardware of the cell phone will not pick up and transmit tones correctly at the speeds and tones at least that unit transmits (HAM packet data at 300 or 1200 baud). I want one of those TinyTrak units, but I just want it to output like morse code or something.

    Maybe we could find or build a voice recorder type device to transmit stored sound clips. (You record the numbers 0-9, west, east, north south, MPH...) into a couple dozen seperate memory locations on a chip. You grab the header line of the serial data out of the GPS once every 2 minutes and then character by character you have it <== IT being this basic stamp/wav storage/playback device like on those picture frames play each coresponding memory location into the phone's mic wires of the hands free kit.

    So the line "... 109.12345 W 39.12345 N..." plays the sound clips stored in memory location "one, zero, nine, point, one..." and you hear yourself over the phone reading the position.


    Later as more 911 call centers turn on their cell phone GPS tracking, we could just hide an old cell phone in the car, then 911 could call the cell phone (set to silent mode, auto answer) and they can get the location of a GPS enabled phone. SOME of the 911 centers in my area have this, but it's been slow to get them online. Heck I guess you could leave it on speakerphone so when 911 does call, if the badguy is in the car, they will know the police are tracking and talking to him through some hidden phone he can't find.
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  6. #16
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    Nice one...

    For it to work the baud rate need to be much lower so the mobile phone can work with it...even if it take 1 minutes to transmit all the data

  7. #17
    Variable Bitrate darkhalo's Avatar
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    couldn't you also be able to use the basic stamp to cut the power to the fuel pump?
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  8. #18
    Raw Wave Laidback's Avatar
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    Why all the need for stamps, 'tone converting things' and sound clips???

    Just get a phone with built in modem and connect it to a GPS. Ring phone - get GPS data! No need for it to ring you back or convert the data into anything else, It's NMEA coming over a serial connection, it can be read by most mapping software!!

  9. #19
    Low Bitrate gadget's Avatar
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    Quote Originally Posted by darkhalo
    couldn't you also be able to use the basic stamp to cut the power to the fuel pump?
    The Clifford alarm should take car of that. I expect that if the vehicle is gone (and I am not close enough for my 2 way LCD remote to notify me) they must have my car on a tow truck and are real pros or I was carjacked and didn't get to my CCW (yes, I might just happen to carry a gun...) or didn't feel I could justify and take a shot. If I have this new cell phone tracking unit (triggered by incoming cell phone and/or alarm output) I would have better range than my LCD alarm remote and be able to determine location.

    I guess I would want it to call several phone numbers or trade off and make one phone call every couple minutes to different phone numbers - my cell phone, my home phone, business phone... Then if my cell phone were with the car, my voice mail is getting updates as to vehicle location.
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  10. #20
    Raw Wave
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    Just get a phone with built in modem and connect it to a GPS. Ring phone - get GPS data!

    Wont you need a data enabled phone?

    Not sure if you can get this to work just like that. Would be nice if you can try it first

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