Results 1 to 10 of 10

Thread: Xenarc Touchscreen powerfeed. Converting to selfpowered?

  1. #1
    Constant Bitrate
    Join Date
    Mar 2004
    Posts
    192

    Xenarc Touchscreen powerfeed. Converting to selfpowered?

    Hi there

    If seems the Xenarc touchscreen isnt self powered and only comes on after the screen itself has had power given to it. Is there any way of making the touchscreen selfpowered off the USB as i have my screen turn off HARD when i pull my keyout, but my computer stays on until the opus turns it off, so the computer thinks ive pulled the touchscreen usb out. WHen it comes back on i get a Duuuuu-daaaaaa as if ive pulled it back in again (which in effect i have as i turn my screen on) and it messes up any visulisation i have running.

    How can i rewire the touchscreen controller so its in effect seperate from the Xenarcs power feed.

    cheers


    Jamie

  2. #2
    Maximum Bitrate hd54321's Avatar
    Join Date
    Jun 2004
    Location
    Los Angeles
    Posts
    839
    I think it may solve all your problems if you ran the Xenarc main power off the computer 12 volt rail. That way the screen will go on/off when the computer goes on/off and you won't have the issue of the USB re-initializing everytime you shut your screen on/off.

    Anyways - this is a very good question and I would like to know the answer myself.

    -HD

  3. #3
    Variable Bitrate fly_dutchie's Avatar
    Join Date
    Feb 2004
    Location
    Amsterdam
    Posts
    281
    Quote Originally Posted by hd54321
    I think it may solve all your problems if you ran the Xenarc main power off the computer 12 volt rail. That way the screen will go on/off when the computer goes on/off and you won't have the issue of the USB re-initializing everytime you shut your screen on/off.

    Anyways - this is a very good question and I would like to know the answer myself.

    -HD

    I run my xenarc of the 12v rail, which is controled by an Opus.


    Michael
    "It does not understand, if it does not ride."

    M10000, 512 Mb, 2,5" 40G, Slim DVD, Opus 90W, Xenarc 7", Leadtek 9532 GPS,
    RoadRunner, MapMonkey, Pioneer HU, Pioneer 4 ch 400W, Kappa 6.5, Basslink X 200W

  4. #4
    Constant Bitrate
    Join Date
    Mar 2004
    Posts
    192
    Yes i was going or am going to do that if i cannot find a decent solution to this problem. I have also e-mailed xenarc support about it to see if they can shed any light on the subject.

    Basically the reason i dont want to do this is after a suspend when its resuming the computer the screen displays an image with a blinking line top left while to comes back from standby which is some wierd res like 720x480 or summink, then when it actually loads the screen like media engine, it then has to readjust to 800x600.

    At present i have and would like it to work with my Navone tuen on delay unit have have the amps hooked to. That way the amps come on after the sondcard has initialized and is playign sound (not a problem) and the screen when the image has stabalised at 800x600. It loooks and acts much better that way

    just bloody USB being a pain in the rear


    Some dude on here must have a solution. Maybe just a resolder with some wire.....

    Be interested to know if the screen is actually 'POWERED' off the xenarcs 12v in (not likely) or its just acting like a relay to the usb's power (likely)

    Jamie

  5. #5
    Variable Bitrate NRGZ28's Avatar
    Join Date
    Oct 2004
    Location
    Las Vegas
    Posts
    407
    Why not try taking it aparat and snoooping around ? The touch screen controller will most likely be a separate board somewhere. Try to see where it gets its power feed from
    Current Setup

    Nexus 7 Tablet
    Built in head unit
    Brutus 1500Watt Amp
    Two Boston 12" subs

    2006 Infiniti M45 Sport ;) My 4 door Camaro... lol


  6. #6
    Constant Bitrate
    Join Date
    Mar 2004
    Posts
    192
    Wayyyyyyyyyyyyy.............. fixed it........


    I bypassed the 20pin 'combo' connector and soldered up a USB lead and found a little PCB connector same as is used on the Touchscreen USB controller board. Hooked it up and it works a treat. Ill post pics tomorrow. Xenarc support gave me some inspiration after i e-mailed them. I havnt even thought of bypassing the Xenarc included wire.

    all good

  7. #7
    Constant Bitrate
    Join Date
    Mar 2004
    Posts
    192
    See my thread here FAQ: Everything you need to know about your Xenarc

    for solution to my and your problems

    Jamie

  8. #8
    Maximum Bitrate hd54321's Avatar
    Join Date
    Jun 2004
    Location
    Los Angeles
    Posts
    839
    Quote Originally Posted by live2themaxuk
    See my thread here FAQ: Everything you need to know about your Xenarc

    for solution to my and your problems

    Jamie
    I couldn't understand what you did very well.

    The Xenarc TS USB Board has 2 different connectors attached to it; one on either side of the board. One of the cable is the a ribbon-connector that I would assume goes directly to the touchscreen. The other connector, a 4-pin connector, connectsattached the TS USB board to the Xenarc 20-pin cable board.

    Are you saying to completely bypass the 20-pin Xenarc cable board and wire up your own USB cable that would attach directly to the computer. This would basically render the USB cable on the Xenarc cable, useless.

    Doing this would add an extra cable to connect to the Xenarc, correct?Instead of having just the Xenarc video/usb combo and power cable coming out of the back, you would have the Xenarc video/usb combo cable, the power cable and the newly hooked up Xenarc USB cable?

    Is this right, or am I wrong? Thanks!

    -HD

  9. #9
    Admin. Linux loser.
    Auto Apps:loading...
    Bugbyte's Avatar
    Join Date
    Sep 2004
    Location
    Corning, NY
    Posts
    7,364
    Blog Entries
    2
    Here's a pic of my Xenarc 8" with TS. The 7" is probably the same. The touchscreen plugs into the controller board at top with a ribbon cable. Then a 4 wire cable runs out and down to to the board that hosts the 20 pin connector.

    Sounds like what live2themaxuk did was unplug the little 4 wire cable plug from the board with the 20 pin connector on it and found a companion socket for for the 4 wire cable and patched that into a USB cable. Now the touchscreen is acts completely separate from the monitor, just like a USB mouse or GPS would. Turning the Xenarc on or off makes no difference to the power to the touchscreen anymore.
    Attached Images Attached Images  
    Quote Originally Posted by ghettocruzer View Post
    I was gung ho on building a PC [until] just recently. However, between my new phone having internet and GPS and all...and this kit...Im starting to have trouble justfiying it haha.
    Want to:
    -Find out about the new iBug iPad install?
    -Find out about carPC's in just 5 minutes? View the Car PC 101 video

  10. #10
    Constant Bitrate
    Join Date
    Mar 2004
    Posts
    192
    Quote Originally Posted by Bugbyte
    Here's a pic of my Xenarc 8" with TS. The 7" is probably the same. The touchscreen plugs into the controller board at top with a ribbon cable. Then a 4 wire cable runs out and down to to the board that hosts the 20 pin connector.

    Sounds like what live2themaxuk did was unplug the little 4 wire cable plug from the board with the 20 pin connector on it and found a companion socket for for the 4 wire cable and patched that into a USB cable. Now the touchscreen is acts completely separate from the monitor, just like a USB mouse or GPS would. Turning the Xenarc on or off makes no difference to the power to the touchscreen anymore.


    Is the correct answer!

Similar Threads

  1. FS: Xenarc touchscreen &controller, backlight, inverter
    By Shadow in forum Classified Archive
    Replies: 8
    Last Post: 11-16-2004, 08:48 PM
  2. Xenarc Touchscreen & Linux
    By cjastram in forum LCD/Display
    Replies: 2
    Last Post: 10-06-2004, 08:43 PM
  3. Xenarc Touchscreen
    By Pabs in forum LCD/Display
    Replies: 9
    Last Post: 07-17-2004, 05:31 PM
  4. Xenarc, Lilliput, touchscreen, no touch, fixability, etc
    By xdigitalchaosx in forum LCD/Display
    Replies: 0
    Last Post: 02-17-2004, 11:18 AM
  5. Xenarc 7'' TFT Touchscreen VGA for Europe
    By VooDoo1999 in forum Classified Archive
    Replies: 3
    Last Post: 06-19-2003, 04:47 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •