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This program turns an ordinary TI-86 calculator into a shutter release trigger for some Canon (and possibly many other) cameras using nothing more than a data-link cable. Future versions will include self-timer, interval, and long exposure modes.
Microcontroller (AVR) based standalone digital light controllers ("dimmers"). The "Diamond" series supports 20 channels (TRIAC, FET, 0-10V, relay) with automatic fading, 20 scenes, 21 timers, IR remote, LCD, DMX-512 interface, global standby & more.