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  • DVD Drive Horror!

    Ok Have 4 drives and many many moons later. I almost have my CD-Drive working! However I recently ran into a new hurtle. I will describe my setup real quick.

    Im running an Opus 150watt, that powers pretty much everything
    I have 15 foot power/usb/monitor cables all running from the rear to the front console. Im using a slot loadable DVD/CDRW laptop drive converted to IDE then to USB.

    My issue is that my cd-rom drive need 5 volts and can only be powered from the opus with a length no more than 5 feet. However I need atleast 12 feet for it to reach the front console.

    It seem current or amperage or what have you(im no electrician) drops enough after 5 feet for the drive to seize operation.

    Tomorrow after Hurricane Jeanne, I plan to pickup a DC 12 to 5 volt converter from Radio Shack. Then tap into the 12volt line of the Opus rather than the 5 then connect the converter to drop the voltage to 5. Im hoping this will work. Not sure what else I could try aside from taping into the cars ignition (which i want to avoid outside power sources).


    Could anyone give me a hint as to why this is happening? Or maybe a better alternative? I'd really appreciate any input... Thanks (soon pics will be posted)

  • #2
    Originally posted by c0rrupti0n
    Ok Have 4 drives and many many moons later. I almost have my CD-Drive working! However I recently ran into a new hurtle. I will describe my setup real quick.

    Im running an Opus 150watt, that powers pretty much everything
    I have 15 foot power/usb/monitor cables all running from the rear to the front console. Im using a slot loadable DVD/CDRW laptop drive converted to IDE then to USB.

    My issue is that my cd-rom drive need 5 volts and can only be powered from the opus with a length no more than 5 feet. However I need atleast 12 feet for it to reach the front console.

    It seem current or amperage or what have you(im no electrician) drops enough after 5 feet for the drive to seize operation.

    ............................

    Could anyone give me a hint as to why this is happening? Or maybe a better alternative? I'd really appreciate any input... Thanks (soon pics will be posted)
    try using a lower gauge wire maybe? the less resistance, the current you will lose

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    • #3
      Voltage drop is probably a more likely culprit than power loss, though I'd be surprised if 12' of wire is causing that big of a drop. Like mikevsgeek said, try using a lower gauge. Use a web calculator to estimate what your current loss is, and what gauge you'll need to bring it to a < 5' equivalent of your current wire.

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      • #4
        Was thinking of that, but as it is the guage is matching the PC's standard guage... Which I believe is 10 or so. Thanks for the input..

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        • #5
          Funny web calculator reads at 5 volt I have a max of 5772 feet before a drop ocurres...http://www.pelco.com/support/tools/wiregacalc.aspx

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          • #6
            Originally posted by c0rrupti0n
            Funny web calculator reads at 5 volt I have a max of 5772 feet before a drop ocurres...http://www.pelco.com/support/tools/wiregacalc.aspx
            "This calculator is for 24 volt equipment only" -- From the linked site

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            • #7
              I have extended the 5v and 12v line from the Opus over 12 feet with 22g wire. Off that one (5v) wire I'm powering three different things. My slot-load slimlime DVD-ROM, the USB -> IDE converter, and a 4 port USB port that is full. I highly doubt your problem is a voltage drop due to wire length or gauge.
              My Install Thread
              digitaljetta.com

              MKIV VW Jetta
              How do I get sound to my car?

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              • #8
                Originally posted by Man
                "This calculator is for 24 volt equipment only" -- From the linked site
                So then wouldn't it just be half? If so, that's still a hell of a lot long than 15'.
                My Install Thread
                digitaljetta.com

                MKIV VW Jetta
                How do I get sound to my car?

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                • #9
                  Yeah something is harry, Because I can run my USB active hubs off the 5volt line just fine... However the dvd-drive is very sensitive... I cut the wire in 5 sections and same senario, anything passed 5 feet(give or take a lil) the drive has a hard time holding a spin when rotating the CD. BTW i verified and Im running 18 guage wire... I came from radio shack and they only have converters that drop to 4.5 or 6 volts. None were 5V. So i bought a 24 guage spindal and am going to give that a try...

                  I will post my results. Thanks for input...

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                  • #10
                    Why are you using higher guage wire??
                    Tidder

                    Try RevFE
                    The best resurrected frontend I've ever used, period.


                    I Wish I could ban people

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                    • #11
                      Originally posted by c0rrupti0n
                      Yeah something is harry, Because I can run my USB active hubs off the 5volt line just fine... However the dvd-drive is very sensitive... I cut the wire in 5 sections and same senario, anything passed 5 feet(give or take a lil) the drive has a hard time holding a spin when rotating the CD. BTW i verified and Im running 18 guage wire... I came from radio shack and they only have converters that drop to 4.5 or 6 volts. None were 5V. So i bought a 24 guage spindal and am going to give that a try...

                      I will post my results. Thanks for input...
                      Sounds like you have it pretty well isolated to wire length. You could be seeing more than half a volt drop with 18 gauge wire @ 15 feet. I estimate going to 12 gauge will bring it about equivalent to 18 gauge @ 5 feet. 10 gauge should make it a moot point. Remember, lower gauge = larger wire. You don't want to be using that 24 gauge wire...

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                      • #12
                        you sure its the power wire that is causeing it? does the computer communicate withe the cdrom ok? if not then it could be somehing to do with the usb lead.

                        else you could be picking up some interferance on the 5v power line, try useing wire that is twisted or has a braided shild.

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                        • #13
                          I've got probably 12+ft of (cheap) speaker cable running from the Opus in the boot to the front of the car, and that is powering a USB2 hub, USB2 to IDE adapter and slimline DVD-rom drive without a problem.

                          Most of my problems have been due to the USB-IDE adapter not being detected!


                          Garry
                          Co-Developer of A.I.M.E.E
                          www.aimee.cc

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                          • #14
                            Originally posted by Confused
                            I've got probably 12+ft of (cheap) speaker cable running from the Opus in the boot to the front of the car, and that is powering a USB2 hub, USB2 to IDE adapter and slimline DVD-rom drive without a problem.

                            Most of my problems have been due to the USB-IDE adapter not being detected!


                            Garry

                            Ditto. I HIGHLY doubt it's the power wire. But there's only one way to find out.
                            My Install Thread
                            digitaljetta.com

                            MKIV VW Jetta
                            How do I get sound to my car?

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                            • #15
                              Ok well Im now officially stumped... I tried the higher (24 guage speaker wire) and was unsuccessful. I'm now limited to only 1 foot where as before I was capable of 5 feet with 18 guage(wierd huh?). Im positive that this is a power issue. Ive done enough troubleshooting to pretty much rule everything else out.

                              I tested the 24 guage at 1 foot with the cd-rom playing music looped for 20 minutes, I did this same thing for the 18 guage at 5 foot. To ensure that it wasnt interminitten...
                              Anything after the allowed length will result in the cd-rom LED blinking rapidly and sounding like its spinning up then stops in a loop. During this time I can see the drive on my PC but it is unable to read the CD in the drive. The usb cable is directly pluged into the PC to avoid possible faults with the usb HUB.

                              Ive also tried this with another laptop drive that i ripped from my IBM and same results... Thanks for the input so far ppls... Let me know if anything further comes to mind...

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