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11-25-2003, 11:16 AM
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#16
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Constant Bitrate
Join Date: Aug 2003
Location: HOME CHICAGO, NOW IN Greensboro
Posts: 185
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Well just make sure you have disconnected the power coming from the usb port or you may end up back feeding the MB, which in turn may draw more current....
__________________
ALIBABA - I30 99
Nemiah M10000, C134
DVD, 40Gig, 256MB DDR
GPS, OBD 2, Reverse Cam
Mute on stereo w I300 car kit
Liliput 7in w usb touch screen
Direct connect with BOSE-CD changer
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11-25-2003, 12:04 PM
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#17
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Variable Bitrate
Join Date: Jul 2003
Location: Melbourne, Florida
Posts: 377
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Quote: Originally Posted by skassama
Well just make sure you have disconnected the power coming from the usb port or you may end up back feeding the MB, which in turn may draw more current....
yeah, the only two wires that actually run to/from the USB port are the data wires, I was aware of that potential problem so I took precautions.
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11-27-2003, 04:16 PM
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#18
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Low Bitrate
Join Date: Feb 2002
Location: DK
Posts: 102
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Does anybody know if a powered usb hub will do the same thing?
MeanGT, what wires would i have to splice into to do it "your way"?
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12-02-2003, 02:48 PM
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#19
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Low Bitrate
Join Date: Feb 2002
Location: DK
Posts: 102
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anybody ?
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12-02-2003, 03:12 PM
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#20
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Raw Wave
Join Date: Oct 2003
Location: Madrid
Posts: 1,983
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Quote: Originally Posted by cvi
what wires would i have to splice into to do it "your way"?
+5v and GND. Usually red & black....see this link http://www.hardwarebook.net/connector/bus/usb.html
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12-02-2003, 03:56 PM
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#21
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Low Bitrate
Join Date: Feb 2002
Location: DK
Posts: 102
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Thanks laidback
What about the powered usb hub, would that keep the gps locked up? If thats the case, i wouldnt wanna splice into the gps, just keep the usb hub powered.
I might be able to wake up the pc with touchscreen or keyboard this way?
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12-02-2003, 06:39 PM
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#22
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FLAC
Join Date: Jan 2002
Location: Long Island, NY
Posts: 1,577
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Awesome idea!
I hated waiting a long time to get a GPS fix, specially when I was showing off the CarPC to someone.
Do you think it will work with the Rand McNally Serial one?
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12-02-2003, 06:56 PM
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#23
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Maximum Bitrate
Join Date: Apr 2003
Location: HOT Arizona
Posts: 832
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So, I take it you now have the gps connected to an accessory 12V line or is it always on (battery 12V)?
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12-02-2003, 07:01 PM
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#24
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FLAC
Join Date: Jan 2002
Location: Long Island, NY
Posts: 1,577
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It has to be a line where 12 volts is supplied to the regulator no matter what key the position is in.
So the Constant On / or the Battery run is fine. I'll use the battery run line before it goes into the shutdown controller.
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12-02-2003, 07:03 PM
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#25
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Maximum Bitrate
Join Date: Apr 2003
Location: HOT Arizona
Posts: 832
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I see, well, just add a switch to cut the power if you have your car sitting for long periods of time. 
I like the idea!
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12-02-2003, 07:04 PM
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#26
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Low Bitrate
Join Date: Sep 2003
Posts: 88
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Quote: Originally Posted by LESLIEx317537
It has to be a line where 12 volts is supplied to the regulator no matter what key the position is in.
So the Constant On / or the Battery run is fine. I'll use the battery run line before it goes into the shutdown controller.
The GPS might kill your battery no? Any idea how many watts the GPS + the USB hub are going to eat up?
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12-02-2003, 07:12 PM
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#27
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FLAC
Join Date: Jan 2002
Location: Long Island, NY
Posts: 1,577
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Quote: Originally Posted by MeanGT
It draws 120-135 milliamps depending on what its doing, and the heatsink barely gets warm at that level.
That's very little. Don't be skurd your batt will die.
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12-02-2003, 07:24 PM
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#28
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Maximum Bitrate
Join Date: Apr 2003
Location: HOT Arizona
Posts: 832
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Quote: Originally Posted by spectrumzz
The GPS might kill your battery no? Any idea how many watts the GPS + the USB hub are going to eat up?
Sounds like the GPS takes 1 Watt if it's 120 mA. I was just saying if your car will be sitting for weeks....I DON'T KNOW!!
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12-02-2003, 07:30 PM
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#29
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FLAC
Join Date: Jan 2002
Location: Long Island, NY
Posts: 1,577
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Would you let your 300HP STi sit for weeks?
My car begs to be driven.
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12-02-2003, 07:37 PM
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#30
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Maximum Bitrate
Join Date: Apr 2003
Location: HOT Arizona
Posts: 832
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