Weird hardware mod ???

Andy Green andy at openmoko.com
Sun Jan 25 12:47:06 CET 2009


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Somebody in the thread at some point said:
| On Sat, Jan 24, 2009 at 05:39:09AM +0000, Andy Green wrote:
|> You'd need to meddle with the mylar flex PCB that holds the BT device
|> where it terminates to the PCB, that won't be simple.
|
|    This is the part that worries me the most. The signals I'm after are
| available at the H-BTFPO01 test points, but that's on the front side,
which
| IIRC is glued to the display, right?

Yes.  It's quite possible to flex the LCM somewhat, but if you flex it
too much trying to peel it off you will crack the touchpanel part of the
LCM.

|> You'd need to find some space for the hub as well, these are only in SMT
|> so you'd need a little PCB somewhere in there.
|
|    The "plan" is to buy a consumer packaged USB hub and rip out the
PCB from
| it, with IC still soldered to it, and trim the PCB as much as
possible, just
| as in the Asus Eee PC mod I referred to.

It'd be too big I think you find.

|    It would also be nice to have the GSM buzz fix worked out before
applying
| homebrew mods to the GTA, if for nothing else to prevent conflicts
over the
| space they occupy. Last I read, the buzz fix will take up some of the (so
| far) unused space in the GTA.

Yeah not too much and near the mic where you wouldn't want to cover it
anyway.

What I would do though is swap the order you're doing things around.
Start with a webcam mated to a mini USB plug and see how you go with the
software stack and driver using the external host connector first.  If
you run into roadblocks there, it saves you doing all the other business
fruitlessly, whereas if it works you at least know you will otherwise
have success.

- -Andy


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