I'm planning on trying to figure out what the pads below the battery actually are (got Open Logic Sniffer in the mail a while back), at least for those that output something.

Current problem is getting probe wires on those pads without doing anything destructive (like soldering, besides it's cramped in there), current plan is to mill pieces of polycarbonate to fit the slots and drill wire sized holes, CNC mill would be nice but I don't have one...).

I'm hoping there is I2C or SPI on the pads (which would enable us to make plans for a "bolt-on" accessory, we could even design a "shields" [ala Arduino] system for N900 )

I'll update the wiki when I get around to doing this (which might take a while since I'm at aKademy mon-wed and on a training camp for a week starting on friday...)