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Light-Activated Trigger - Delay Unit Package, unassembled
This package includes the parts to build a light-activated trigger with an electronic delay unit. There is a $1.00 discount from the price of both kits purchased separately. There is an additional $1.00 discount for purchasing the combination with a breadboard.
This trigger operates the reverse of our photogate kits. The output of the light-activated trigger is switched on when light shines on the detector. A laser pointer works particularly well as a light source, since the phototransistor is sensitive to visible light and has a narrow angle of view. The circuit is powered with a 9-V battery or AC/DC adapter (not included).
Cords to connect the breadboard circuit to a flash unit or camera are not included.
In order to trigger a flash unit, see this page for flash cable kit options.