This is an IR remote control for Nikon cameras. It is compatible with the Nikon ML-L3 remote control. Supported cameras include: D40, D40X, D50, D60, D70, D70s, D80, Coolpix 8400 8800. This design is based on an idea from http://www.bigmike.it/ircontrol/. The circuit is extremely simple: an ATtiny13V, button, transistor, resistor, IR diode and 3V battery.
Nikon Camera Remote Control using ATtiny13 Microcontroller is a post from: ATMega32 AVR