 Battery Powered Usb Hub?, do they exist? |
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 Sep 6 2008, 08:50 PM
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#1
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 Group: Members Posts: 803 Joined: 30-March 04 From: California Member No.: 2,368  |
I have a usb device that requires more power when pluged into the zaurus. I still need to be mobile so I'm wondering if there are any goot battery powered usb hubs out there that will add the extra power needed to allow powered usb devices to work? Does anyone know of any?
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Sep 7 2008, 03:05 AM
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#2
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Group: Members Posts: 31 Joined: 29-December 07 From: Spain Member No.: 21,128 |
http://eu.cyberpowersystems.com/product/hub_h420mp.htm not one of the wonders of the world but relatively easy to find in ebay and works
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Sep 7 2008, 11:43 AM
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#3
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Group: Members Posts: 135 Joined: 27-June 05 From: Prague, Czech Republic, Europe Member No.: 7,468 |
If you are hardware hacker, you may modify your Zaurus to support 500mA (for 2.6 kernels you also need to increase kernel power budget from 180 to 500). It's just one resistor replacement: www.iral.com/~albertr/linux/zaurus/wireless/
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Sep 27 2008, 04:08 PM
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#4
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Group: Members Posts: 803 Joined: 30-March 04 From: California Member No.: 2,368 |
QUOTE(laan @ Sep 7 2008, 04:05 AM)  http://eu.cyberpowersystems.com/product/hub_h420mp.htm not one of the wonders of the world but relatively easy to find in ebay and works I ended up getting this one and it works great! Seemed to be the only battery powered one out there. |
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Oct 24 2008, 01:06 AM
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#5
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Group: Members Posts: 13 Joined: 15-October 07 Member No.: 20,828 |
QUOTE(xamindar @ Sep 6 2008, 08:50 PM) I have a usb device that requires more power when pluged into the zaurus. I still need to be mobile so I'm wondering if there are any goot battery powered usb hubs out there that will add the extra power needed to allow powered usb devices to work? Does anyone know of any? All you need is 5 Volts (max) connected to the USB power pin. This lthiuem-battery produces 4 volts and it seems to be sufficient to power most power-hungry devices I have. 
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Oct 24 2008, 02:57 AM
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#6
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Group: Members Posts: 803 Joined: 30-March 04 From: California Member No.: 2,368 |
Nice
  
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Oct 26 2008, 02:56 PM
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#7
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 Group: Admin Posts: 3,285 Joined: 29-July 04 From: Cambridge, England Member No.: 4,149 |
QUOTE(timonoko @ Oct 24 2008, 09:06 AM) This lthiuem-battery produces 4 volts and it seems to be sufficient to power most power-hungry devices I have. interesting... how do you charge up that battery? |
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Oct 26 2008, 10:48 PM
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#8
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Group: Members Posts: 13 Joined: 15-October 07 Member No.: 20,828 |
interesting... how do you charge up that battery?
-- It is of course removable. It is one of my camera batteries. I have chargers, also a solar charger for that. |
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Oct 26 2008, 11:13 PM
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#9
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Group: Members Posts: 13 Joined: 15-October 07 Member No.: 20,828 |
Simple design:
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