Hi Tim,

If all you need is remote shutter operation (perhaps with timers), than there is an easier way to do this. There are apps for Android, I phone and so on that play .wav files over the earphone socket, which in turn drive a pair of IR LEDs. I assume its a DSLR you are talking about. I am in the process of designing a pic based cable that would use any such app, and permit me to control the DSLR with a wired connection. The extra benefit would be better, AND brand/protocol un-specific operation.

If you want to do this with a Canon point-and-shoot, you could use the CHDK build, and it would be very trivial to let the pic take control, although with the loads of functions built-in into the CHDK you probably wont need the pic.

Regards,

Anand