The Asus WL500GP wireless router runs Linux and has two USB ports. [equinoxfr] wanted to install audio support internally to the router though (translated). Luckily, it uses a VIA VT6212 4port USB controller. So, he was able to wire two more internal ports. A Brando USB soundcard is plugged into one of those ports and wired to an external headphone jack. He wanted dual RCA connectors, but they just wouldn’t fit. The router is running OpenWRT Kamikaze. MPD is used to serve music with the wymypy frontend since it has its own lightweight webserver.
While researching the CHDK How-To, we came across the team’s instructions for porting the firmware to entirely new cameras. In theory, CHDK should work on any Canon running the DIGIC II or III processor since most of them are running the same VxWorks OS. A dump of the camera’s firmware is required before porting work can begin. On some cameras, the firmware was retrieved using software, but others required a hardware route. Pictured above is a Canon A610 that’s slowly flashing out every bit of its firmware using the built in LED. The photodiode is hooked up to a soundcard where the entire bitstream is recorded. It takes 1-7 hours to read the entire firmware. Once the sound file has been captured, it’s reverted to the original bytes and can then be decompiled with something like IDApro.