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HOWTO: Power a USB Hub for the G4 HOWTO: Power a USB Hub for the G4


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Old 07-18-2007, 12:47 PM   #16
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Just contemplating; that might be a nice product in the mp3car store; a 12v relay powered USB hub...

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Old 07-24-2007, 12:38 PM   #17
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Quote: Originally Posted by IandI View Post
Is there a reason why you can't eliminate the relay and wire the GRN/BLK wire of the CNX-P5V directly to the USB power from the G4?

Started reading the Carnetix manual and the same question popped into my mind.

Too bad this question is left unanswered.

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Also, wouldn't it be a good idea to fuse the 5v output prior to the device or hub?

Now this question is answered in the manual. Yes, you should use a fuse.

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Old 07-24-2007, 12:40 PM   #18
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Quote: Originally Posted by pim View Post
What confuses me is that the USB hub that is referenced in god_of_cpu's article looks to me like a bus powered one. It says so on the packaging and I don't see an external input.

Confusion over. I ordered a small USB hub from CarTFT and got the exact same model as the one shown in the mp3car store. It does indeed have a power supply input, but no power supply.

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Old 07-28-2007, 12:59 AM   #19
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Quote: Originally Posted by pim View Post
Started reading the Carnetix manual and the same question popped into my mind.

Too bad this question is left unanswered.

I am 99% sure you don't need the relay, but if you want to isolate it from the G4 for some reason then use the relay. I don't think I saw that version of the manual before. It has a bit more details than the one I downloaded previously. I will try it tomorrow and let you know, as I didn't have the need to install it yet.
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Old 09-25-2007, 05:30 PM   #20
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I won't be using this for a G4 but I think I understand what to do. Could someone confirm for me that I am understanding this correctly?

Name: Cnxp5v diagram.jpg Views: 300 Size: 26.3 KB


Thanks!
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Old 10-03-2007, 12:55 PM   #21
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maybe for germany users: i know an electronic power supply expert, that can build a solution like yours with SMD Electronics completly ready for use with cables :-) If anybody need that, send me PM, than i send you the Email Adress of the expert. I think it is not expensive.
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Old 10-16-2007, 07:48 AM   #22
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Great article. I am just having a few problems visualising the finished item. (Not enough coffee this morning). If someone has completed this mod would they mind posting a few images?

Regards

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Old 10-25-2007, 09:02 AM   #23
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Quote: Originally Posted by incudie View Post
I won't be using this for a G4 but I think I understand what to do. Could someone confirm for me that I am understanding this correctly?

Attachment 45017


Thanks!

What would happen if the 5V from the CNX_P5V was hooked up to the 5V USB lead and the CNX_P5V ground hooked to the USB lead ground and the output from the relay as shown on a USB hub that didnt have a power supply input
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Old 03-23-2009, 09:31 AM   #24
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Quote: Originally Posted by pim View Post
Just contemplating; that might be a nice product in the mp3car store; a 12v relay powered USB hub...

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Amen, Brutha!
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Old 03-24-2009, 01:17 PM   #25
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I broke down and built my own voltage regulator. My CarPC has a switched +12VDC that only provides power when the computer is running. I am now using this as my source and have hooked up the USB port to the +5VDC output. I'll post pictures when I get home.
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