I should've just tried it! You're right Benson - it complains the hub isn't supported (also complains the microSD reader isn't supported, methinks someone screwed up the error messages since they both work!)


So yeah - it worked and it worked well! I'll take a picture of the frankenstein setup later.

N810->USB-A OTG dongle->hacked FlexUSB Power Injector with Camelion battery->USB 4-port hub==>Huwaei E220 & microSD card reader & another microSD reader.

Huwaei modem (this one is the E220, not E168 I was after) was detected in dmesg [still need to find a way to set it all up though, will do so later] - the modem draws 500mA from the port so wouldn't work direct from the N810 without the injector.

microSD readers both worked as expected in addition to the above, showing 2 "removable drives" in the file-manager. Better yet - even without the power injector, both microSD readers + hub worked well drawing power from the N810 [should be simple enough to basically add an extra 2 microSD cards to the N810 without bulky addons that basically sit flush on the back of the N810!]



As for FFCs, I see a LOT of companies out there that would do an order made to measure. However I doubt very much they'd offer something to an end-user such as myself They'd probably want an order in the thousands. I'll keep scouring the likes of RS Electronics, Farnham, Maplins, EPO, etc


Without knowing more about the battery USB connections (you sure they're not JTAGs like on the N800?) I think FFC is the way to go.

Also instead of a custom lithion ion battery + charger + regulator setup, I reckon we could get away with a hacked Camelion battery + custom snap in AA battery connector [something that can accomodate 1 or 2, or maybe more depending on dimensions AA or AAA batteries]. The batteries can be wired in parallel to provide more amperage; and since they're standard you can charge them anywhere.


How much interest do you reckon people would have in a few solutions like this? I need money to fund a PhD *grin*



Some typically needed measurements for FFCs: http://www.imperial-connect.co.uk/pr...c/FFC_info.asp