Results 1 to 4 of 4

Thread: USB Power Trigger

  1. #1
    Newbie
    Join Date
    Mar 2005
    Posts
    4

    USB Power Trigger

    I'm working on powering a USB hub that accepts a straight 12V source(has its own regulator built in to convert to 5V). What I need to do is have this hub always on when the laptop is on, and always off when the laptop is off otherwise weird issues happen.

    Any suggestions on how to go about doing this?

  2. #2
    Organic Me
    Auto Apps:loading...
    Heather's Avatar
    Join Date
    Sep 2007
    Location
    Fells Point, Baltimore, MD
    Posts
    1,287
    Blog Entries
    48
    You buy the P5USB at the mp3Car Store?
    unless you want to build it yourself.
    Suggestions or Comments on the forums? Post here.

    mp3Car store order questions or products that you would like to sell on the store? Email store @ mp3car.com

    Feel free to pm me if you:
    • Have a general comment on mp3Car's products or services
    • Have a product you would like to have tested by the mp3Car community
    • Have a file you would like mp3Car to host
    • Have a cool idea that would improve the forums

  3. #3
    Newbie
    Join Date
    Mar 2005
    Posts
    4
    That looks like exactly what we need, unfortunately at this point we have 300 hubs purchased that I need to make work. We actually just wired up a 6V relay inline and it's doing what we need but building the cables is an issue.

  4. #4
    Newbie
    Join Date
    Mar 2005
    Posts
    4
    I used the guide at http://www.mp3car.com/vbulletin/mp3c...sb-hub-g4.html

    I was able to run both 5V and 12V to the same relay without any issues...

Similar Threads

  1. USB power up and power down questions!
    By HiJackZX1 in forum General Hardware Discussion
    Replies: 1
    Last Post: 03-03-2008, 10:31 PM
  2. USB port power dies?!
    By pixelflash in forum General Hardware Discussion
    Replies: 1
    Last Post: 10-22-2007, 09:26 AM
  3. 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
  4. Problem with ITPS / hibernation and External USB HD
    By veetid in forum Power Supplies
    Replies: 5
    Last Post: 01-02-2006, 08:35 PM
  5. USB power issues - opinions please
    By zaxxon in forum Power Supplies
    Replies: 2
    Last Post: 07-20-2005, 10:03 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
  •