Seriously this device can do things that push photographing to new skies. Camera armed with phototrigger may be programmed to do shoots periodically with up to 100 hours periods – great time lapse option that also can be combined with bulb mode with same timing. Also photographing can be postponed to up to 24h.
Phototrigger runs on ATmega168 microcontroller that is also equipped with LCD screen for easier setting. Schematic is kept as simple as possible – even simplified RTC is run in software to keep time track. For save shutter triggering there is an optotransistor used but there is a possibility left to use MOSFET that must be used with caution. This is a “must have” device for photography lovers especially time lapse.