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Old 13th February 2019
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Graham_of_Rainham Graham_of_Rainham is offline
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Re: Remote control devices

Originally Posted by Walti View Post
...The only bit I'm missing is how the remote triggers the camera, I'm assuming it's a push button that makes a short between two of the stereo pins on the 3.5mm jack, with one for pre and one for actual release, however I don't have that info...
The SCR in the circuit closes (like a switch) to trigger either the camera or the flash. The SCR I used is rated to 1000V so no problem using old guns with high trigger voltages.

That company, and others, have cross beam sensors and zig-zag (off a mirror) sensors to enable you to catch very small things.

The small gap sensor shown was used for water drops and was very effective. I may just power it up and do some more...


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