don't!!!
it might seem as a good idea, but the n800 will not give out enough power. what I did was get a battery powered USB hub. I cannot even plug in a simple card reader in the dongle alone! (a usb drive works perfectly though).
There are hacked kernels about that disable the check; but that doesn't permit increasing the actual power consumed; it is useful, however, when using some (poorly designed) hubs that have a power jack, but claim themselves to be bus-powered. Or, with a bus-powered hub modified to be battery powered. But the N800 will still shut the USB power down in case of an overcurrent, it just won't stop first from software, so it's not dangerous.
There are hacked kernels about that disable the check; but that doesn't permit increasing the actual power consumed; it is useful, however, when using some (poorly designed) hubs that have a power jack, but claim themselves to be bus-powered. Or, with a bus-powered hub modified to be battery powered. But the N800 will still shut the USB power down in case of an overcurrent, it just won't stop first from software, so it's not dangerous.
I noticed this when taking the above photo. I tried it with 2 USB drives and the card reader, My N810 automatically shut off USB. I had to unplug everything and plug it back in to make it work.
Doesn't ANYBODY make a AA battery powered USB hub???
It can be done with a 9v easily, I'm not sure about AA's. Use a 7805 voltage regulator to give 5v power to the hub. If you want to use AA's you will need about 6 of them, or just the one 9v.
Obviously a 9V is the way to go, I just wasn't wanting to build one myself. I can't believe someone hasn't build a battery powered hub. (Rechargeable is overkill).
