The HiViz.com WorkShop
Delay Kit, unassembled
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This kit includes parts for a delay circuit that can be used with our sound, photogate, or light-activated triggers or simply with the closure of an electrical contact to synchronize the discharge of a flash unit with the event to be photographed. Delays are adjustable from about 0.0002 - 0.5 seconds. There is both coarse and fine control of the delay interval. A red LED flashes when the circuit triggers. 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.