Combination App and Atmega powered board to control DSLRs. Bluetooth support to connect phone to board. Can be triggred using sensors. Also has support to control relays.

Simple Shoot – Delay shot & Bulb mode included

Timelapse – Including servo controls

Sound Trigger – Trigger the camera when the microphone volume hits a set point

Light Trigger – As above but for the LDR, can be used to trigger from flashes or when a laser beam is broken

DripTrig – A custom mode for taking water drop photos, It opens a valve and detects the water droplet breaking a laser beam, then triggers the shutter after a delay to capture the splash.

HDR shot and timelapse

via Rory Crispin's Blog | What is toroCam?.