Page 4 of 5 FirstFirst 12345 LastLast
Results 31 to 40 of 43

Thread: W3bMa5t3r's USB Power Modules

  1. #31
    Newbie
    Join Date
    Oct 2007
    Location
    Chicagoland
    Posts
    7

    Thumbs up USB Power

    I have an IBM portable and dock with an external HD.
    My portable is set to sleep after 20 minutes of no power (ie. relay on acc turns off power).

    If you can make your module power down when the portable goes to sleep, then I would not have to keep my drive (or anything else) alive 24/7.

    I can tell you the portable does have a sleep light.
    I do not know if there is a way to monitor / connect something to the dock and know if the portable / dock is in sleep mode.

  2. #32
    FLAC W3bMa5t3r's Avatar
    Join Date
    Apr 2006
    Location
    Washington, DC
    Posts
    1,268
    Quote Originally Posted by GMC1 View Post
    I have an IBM portable and dock with an external HD.
    My portable is set to sleep after 20 minutes of no power (ie. relay on acc turns off power).

    If you can make your module power down when the portable goes to sleep, then I would not have to keep my drive (or anything else) alive 24/7.

    I can tell you the portable does have a sleep light.
    I do not know if there is a way to monitor / connect something to the dock and know if the portable / dock is in sleep mode.
    Would it be possible for you to get the voltage that that sleep light/led is showing when lit? Just a multimeter, one lead to each side of the light/led. From there we can see what to do... I have an idea brewing.

  3. #33
    Wants to make it harder monkeyracer's Avatar
    Join Date
    May 2007
    Location
    Lakehood, CO
    Posts
    1,463
    So, what happened to the 2 port no data pass through units? That would have been perfect for my USB hub and external DVD drive case.
    Both devices have two USB cords, one for data, and one solely for power. These would be the most "power-hungry" devices I'd plug in to the CarPC.

    Can that still be made on request? (Or instructions on how to make it myself?) I'd rather do that then to buy two of the single pass thru units.

    If not, I have a Power Inverter for the PS2 that also has a 5V USB port for this kind of thing, but just one, and I'm not sure what current it provides.


    Thanks in advance...
    2007 Chrysler PT Cruiser TE
    Car PC Progress:
    Planning.......[---------X-] 95%
    Parts...........[---------X-] 90%
    Fabrication...[---------X-] 90%
    RR Skin........[---------X-] 95%
    View my
    Worklog
    Road Runner Skins
    Website
    Favorite thread EVER!

  4. #34
    Wants to make it harder monkeyracer's Avatar
    Join Date
    May 2007
    Location
    Lakehood, CO
    Posts
    1,463
    Quote Originally Posted by kostyanj View Post
    Hey guys, I have a question/request. I need help with the soldering of this thing. I tried soldering it onto my board to no avail. The problem is that the power button has TINY leads and is surrounded by a million other things. So the one time that I managed to successfully get the wires to stay and work to power on the laptop, it shorted the video card. So if anyone is willing to help me or give me advice, it'd be greatly appreciated.
    is that supposed to be for this thread here:

    http://www.mp3car.com/vbulletin/user...rn-module.html

    this thread is about the USB power module, there should be no soldering involved.
    2007 Chrysler PT Cruiser TE
    Car PC Progress:
    Planning.......[---------X-] 95%
    Parts...........[---------X-] 90%
    Fabrication...[---------X-] 90%
    RR Skin........[---------X-] 95%
    View my
    Worklog
    Road Runner Skins
    Website
    Favorite thread EVER!

  5. #35
    Low Bitrate
    Join Date
    Jul 2007
    Posts
    78
    Sorry, you're right... Please delete my previous post

  6. #36
    Newbie
    Join Date
    Aug 2008
    Posts
    18
    Just curious, do you have a schematic or even just a parts list for this? I had a fun time hacking together my own auto turn-on module thanks to your instructions. =)

    Of course, if it's a trade secret...

  7. #37
    Newbie
    Join Date
    Aug 2008
    Posts
    18
    Quote Originally Posted by pim View Post
    It would even be better if it would use the host's USB 5v to switch on and off, rather than the car's switched 12v.

    This way, your connected devices will still be connected if your car pc shuts down, usually after you turn off ignition. Disconnecting your devices before shutting down may cause havoc.

    Pim
    That's done easily enough. You can get a 5V relay that responds perfectly to USB power, as in the laptop auto-off module (part here).

    Just put that relay as default on on a usb cord connected directly to the host, as with the auto-off module.

  8. #38
    Variable Bitrate
    Join Date
    Sep 2007
    Location
    West Springfield, MA
    Posts
    366
    Ok, I'm trying to figure out if this would help the problem that I'm having with my external DVD drive. I have the USB wire going straight to the PC, and it has 5v power coming off the PSU. It's the only device that has trouble resuming from hibernation, even with Devcon all setup. My thought is because it's getting power too soon to resume properly. I had the thought of putting the 5v PSU power through a relay that would be triggered by the USB ports, causing the device to get power later than it already is. I just can't find a 5v relay that would put out more than an amp and the drive uses 1.48 amps. Would one of these do the trick, or am I just hoping too much?

  9. #39
    Newbie
    Join Date
    Aug 2008
    Posts
    18
    Quote Originally Posted by blackcobra487 View Post
    Would one of these do the trick, or am I just hoping too much?
    Honestly, I think having the drive powered on before resuming would be more compatible. Have you tried using devcon's plug-and-play discovery after resume?

    Code:
    devcon rescan

  10. #40
    Variable Bitrate
    Join Date
    Sep 2007
    Location
    West Springfield, MA
    Posts
    366
    No, I don't know anymore about Devcon than I read in the write about using it to resume from hibernation. Would I just write a script that would say
    $rc = _rundos("c:\devcon rescan")
    or do I need a HW ID?

Page 4 of 5 FirstFirst 12345 LastLast

Similar Threads

  1. Bytecc BT-200 USB 2.0 to IDE Adapter power?
    By hauler34 in forum Input Devices
    Replies: 1
    Last Post: 11-07-2006, 01:02 PM
  2. Another USB standby idea: splice wire and use a relay?..need help
    By S4Per in forum General Hardware Discussion
    Replies: 4
    Last Post: 11-04-2006, 10:12 AM
  3. Problem with ITPS / hibernation and External USB HD
    By veetid in forum Power Supplies
    Replies: 5
    Last Post: 01-02-2006, 08:35 PM
  4. USB power issues - opinions please
    By zaxxon in forum Power Supplies
    Replies: 2
    Last Post: 07-20-2005, 10:03 PM
  5. USB power & touchscreen issues...
    By Ren77 in forum General Hardware Discussion
    Replies: 1
    Last Post: 12-11-2003, 04:56 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
  •