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Thread: Rand McNally GPS drives my PC WILD...

  1. #1
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    Rand McNally GPS drives my PC WILD...

    I have the Rand McNally GPS receiver, and about 50% of the time when I boot my car PC up, I think it mistakes the receiver for being a mouse, since it is plugged into the ps/2 port and the serial port. It sends the pointer flying wildly all over the screen, as soon as I pull it out of the ps/2 port (which apparently it uses for power), it ceases, but of course then I don't have GPS ability. Anyone run across this? I use a 10.4" Datalux touchscreen with my setup, which plugs into the other serial port.

  2. #2
    FLAC LESLIEx317537's Avatar
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    Arrow

    Hey that sounds bad, luckily for myself I just bought the Rand McNally GPS also - but the USB version that is new.

    Have you tried plugging it into your keyboard ps2 port for power instead?

    Also have you flashed your computer bios to the newest one?
    SP13000|M2-ATX|512MB DDR400|2.5" 7200RPM S-ATA|Trans-7"|Slim SL DVD-CDRW|KEH 5.1 DSP|SB L!ve Ext|Gyration PowerMate|BT|WiFi|GPS|WinXP|VoomPC
    GPSing - Digital Speedo
    Relocating headunit and extending faceplate
    Button app to Alt-Tab between two programs

  3. #3
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    one a semi related note, where can i buy the mcnally receiver for cheap?

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    Hey!

    thats what happens to my gps reciever... Lol... check oiut my thread about it: Virus in a winamp plugin GRRRRR

    what i did is I let my computer boot up and let my mouse jump all over the screen for a few secs.... Then, I disconnected the power source (in my case AA batteries) and the jumping stopped. So then I went to device manager and disabled the serial mouse that was conencted.... put the batteries back in and reboot... the device stayed disabled and CoPilot picked up my gps no problem..
    -Jason..
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  5. #5
    FLAC
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    ok one VERY useful info for those using the randmcnally. You can just cut the power plug (PS/2) find out which is the +5V and the ground...... and hook that up to the 12V from the car. Doesn't have to be regulated either. The specs of the randmcnally is something like 4V to 15V. So any voltage at that range will work fine.
    Dont mess with the PS/2 port, specially if you have "mouse" problems hehe
    04 Acura TL w/ core2duo 2ghz laptop w/ 1gb RAM on a docking station.

    Fast car, fast PC. ;)

    http://www.arcdesigns.net/carpc/

    My TL CarPC ver2

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  6. #6
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    Great insight moahdib!

    thanks
    Pigseye

  7. #7
    FLAC LESLIEx317537's Avatar
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    Glad I bought the new USB one. Less cables.
    www.randmcnally.com
    Paid $150 though shipped. But I want it bad! Use it on my laptop until my carputers done. USB hopefully is ez.
    SP13000|M2-ATX|512MB DDR400|2.5" 7200RPM S-ATA|Trans-7"|Slim SL DVD-CDRW|KEH 5.1 DSP|SB L!ve Ext|Gyration PowerMate|BT|WiFi|GPS|WinXP|VoomPC
    GPSing - Digital Speedo
    Relocating headunit and extending faceplate
    Button app to Alt-Tab between two programs

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    Hmm...when the pointer is freaking out and I go into device manager, I don't have a serial mouse that was detected. So far the only solution seems to be to reboot and hope by the luck of the draw that when it boots up it won't have the problem. Is there anyway to prevent the serial mouse driver from being loaded??? Or even a way to prevent any type of mouse being loaded? I use the Datalux 10.4 touchscreen and it has its own drivers for the serial port touching interface.

  9. #9
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    I think this one has pretty much been mentioned before, but have you tried to use the keyboard input for power.

    I have another brand where power is ps2 and communication is a serial port connector.

    if your gps use the ps2 for both power and comms, you might be able to use a converter from ps2 to serial. I'm not sure how much power the serial port can deliver ...



    Another option is if your datalux touchscreen is a serial port, try switching them around, this might catch your problem ...



    If nothing of this works, you might want to contact Rand McNally and have them figure out what is wrong.

  10. #10
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    The GPS uses the PS/2 for power and the serial port for communication. It does not matter if it is plugged into the ps/2 mouse port or the keyboard port, it still gets power either way and sends my pointer flying all over the screen. I'm not sure why switching the serial ports would make a difference. I would tend to think the PC would pick up COM1 first and then COM2 secondly when it boots windows. My touchscreen is plugged into COM1 and the GPS is plugged into COM2. I think I'll be giving rand mcnally a call.

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