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Controlling a relay via cellular phone.....

Discussion in 'Electronic Basics' started by EsDee, Jul 12, 2006.

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  1. EsDee

    EsDee Guest

    Hello,

    Since a few weeks I am running a webcamserver . It is stationed 40
    Kilometers away. I control it via an UltraVNC connection. However, about 2
    times a week I need to hard-reset the computer manually.
    I am looking for some kind of construction to reset the computer via a GSM
    cellular phone.
    The only thing I need is a relay that I can switch by making a call to the
    GSM phone. So, I need only 1 channel.
    This relay could switch the reset-button.

    Can anyone help me out?

    Thanks in advance.

    Marcel
     

  2. Why not use the printer port and just issue the right command to pull
    the reset line low with a DIP or reed relay?


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     
  3. Guest

    Guest Guest

    Maybe he needs to reboot because the computer gets locked up, in which case
    he would need an "outside line".
     
  4. Think you may have missed a few groups!

    <paranoia>

    ****BANG****
    FBI/CIA... what account was this?

    Geneva,

    OK no probs

    </paranoia>

    or just do a nice stir fry, lots of veg, hot oil and Wok. Beats
    McDonalds anyday. And you dont fart as much


    martin
     
  5. John Larkin

    John Larkin Guest

    Vibrator motor drive?

    John
     
  6. Guest

    Guest Guest

    I wouldn't want a computer that rebooted every time it's telephone number
    rang, so I would plan on sending a coded tone signal. The buzzer signal
    could be routed to the push to talk (answer) button so it would
    automatically answer every call, but off-hand I don't know how to hang up,
    if you are planning to remote detonate a bomb then you won't need to hang
    up.
    Paranoid? I AM THE KING OF PARANOIA!!
     
  7. Eeyore

    Eeyore Guest

    For a second I thought you were a terrorist bomber !

    Graham
     
  8. Si Ballenger

    Si Ballenger Guest

    System admins use the below x10 telephone gizmo to remotely cycle
    the power to hung servers to reboot them.

    http://www.x10.com/products/x10_tr16a.htm
     
  9. John Fields

    John Fields Guest

     
  10. I think al Qaida has details on how to do this posted on their website.
     
  11. Guest

    Ask yourself how many wrong numbers you get per week. Ask yourself
    whether you really want your computer reset everytime someone misdials
    the number of the pizza-parlor. Ask yourself whether you really want
    everybody on the planet to be able to reset your computer at will.
    Including everybody on usenet, once someone finds out the number you
    assigned to this and posts it here.

    I'm sorry, but no functional computer needs to be reset twice a week.
    Hitting reset everytime your computer hangs is like buying a new car
    everytime the old one runs out of gas. It is the desperate attempt to
    avoid solving a problem.

    If your computer hangs that often, then your setup is broken -- either
    in hardware or in software. Fixing it will not only save you money in
    the long run (no need to keep a GSM) but will probably teach you a
    bunch of things. Some of which might even come in handy in the future.


    cordially

    Y.T.
     

  12. If it's locking up, the printer port makes even more sense. Output a
    pulse at a regular interval. If it stops, your controller resets the
    computer. A simple missing pulse detector and a little thought will
    show you how it works. Think of it as an external watchdog timer.


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     
  13. Eeyore

    Eeyore Guest

    You've never used Windows ?

    Graham
     
  14. Alan B

    Alan B Guest

    Er, Graham, he said *functional.*
     
  15. Guest

    Guest Guest

    Thank you. You are correct, I think. I didn't catch on to the use you had in
    mind.
     
  16. Guest

    Guest Guest

    Did anyone ever tell you about the huge voltage potential between the
    electron gun at the back of your monitor, and the screen you have a few
    inches from your nose.
    RUN, RUN

    tapwater
    Professional Chicken Plucker
     
  17. Jim Thompson

    Jim Thompson Guest

    [snip]

    Isn't the correct spelling "PHUCKER" ?:)

    ...Jim Thompson
     
  18. You can buy cards that implement the WDT function for PCs.



    Best regards,
    Spehro Pefhany
     
  19. Guest

    Guest Guest

    Buy? Wait, I have to turn the crank on my home-made electrical generator.
    There, that will hold it for a few minutes. What means this word "buy"?
    Thank you for the information, and if I ever get some money I will learn to
    buy stuff.

    http://www.speff.com
     
  20. Guest

    Guest Guest

    You can spell what YOU do any way that you want to.

     
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