Hey Pixeldoc2000! Awesome job, man!
Before the question, let me introduce the scenery.
I'm working on an open source software/hardware to control Canon cameras remotely and provide OSD telemetry data.
The project is called ArduCam OSD.
It's intended to be done through most interfaces as possible and could be extended to other brands. Until now, it works by hosting the camera on its USB bus. It uses Powershot PTP commands (PS-ReCSDK 1.1.0e). However, the ArduCam hardware exposes pads for SPI and i2c too.
I'm in touch with Mweerden. He is helping me to figure out a way to extend the PTP command set to CHDK's PTP too (to Heyalp's implementation).
More details about the project here:
http://code.google.com/p/arducam-osd/wiki/arducam_osd?tm=6.
So, here goes the question: now that you have access to more details, do you think it could be possible to discover if the i2c exposed on GoPro could be used to remote controlling it? It would be an awesome addition to ArduCams firmware.
You know, I'm referring to pins 28, 29:
1 GND
2 R video out - component Pb/Cb or composite
3 G video out - component Y
4 B video out - component Pr/Cr
5 USB +5V USB power
6 USB +5V USB power
7 USB DP-B USB data line D+
8 USB DM-B USB data line D-
9 GND
10 HPR audio out right channel
11 HPL audio out left channel
12 PWR/MODE power/mode button
13 V3.6 ?
14 IN1R audio in right channel
15 IN1L audio in left channel
16 IR IN input IR receiver
17 TRIG ?
18 GND
19 ID1 digital input
20 ID2 digital input
21 ID3 digital input
22 ID4 digital input
23 ADAPTER output - power for ext. adapter?
24 ADAPTER output - power for ext. adapter?
25 WBAT+ input - ext. power for camera?
26 WBAT+ input - ext. power for camera?
27 GND
28 DATA interface I2C
29 CLK interface I2C
30 GND
