HOWTO: Power a USB Hub for the G4 - Page 2

pim · 07-18-2007, 11:47 AM

Just contemplating; that might be a nice product in the mp3car store; a 12v relay powered USB hub...

Pim

pim · 07-24-2007, 11:38 AM

Quote: Originally Posted by IandI

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.

Quote:

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.

Pim

pim · 07-24-2007, 11:40 AM

Quote: Originally Posted by pim

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.

Pim

IandI · 07-27-2007, 11:59 PM

Quote: Originally Posted by pim

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.

incudie · 09-25-2007, 04:30 PM

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: 200
Size: 26.3 KB

Name: Cnxp5v diagram.jpg
Views: 200
Size: 26.3 KB

Thanks!

marci · 10-03-2007, 11:55 AM

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.

StalkS · 10-16-2007, 06:48 AM

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

StalkS

Delco · 10-25-2007, 08:02 AM

Quote: Originally Posted by incudie

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