Remote / timer for X-Pro 1 -- trying to build one.

abelits wrote:

Yes, but I want it to work with a timer for long exposures and time lapses. 8-bit microcontrollers usually don't come with a built-in air pump.

Since this only makes sense with a tripod, and tripod only benefits from added weight as long as it's sufficiently lower than the camera, I would rather keep all control and power on a tripod, and either entirely wireless or minimal current over control connection. It also helps not to have poory filtered inductive load with long loops around sensitive electronic equipment.