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How to build the ultimate camera trigger

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Offline ahull

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Re: How to build the ultimate camera trigger
« Reply #10 on: 17 / November / 2014, 17:58:34 »
If you need a simple hardware solution, you can probably adapt something like this.

Since the output goes low when triggered, it would be relatively easy to drive a mosfet or optocoupler directly with it. The mosfet could in turn switch a relay.

Of course I may be over simplifying the problem slightly as these devices are relatively crude, and their output may need latching and/or de-bouncing. For that, add an Arduino pro mini clone (or if you are old school, a 555 timer).... but... as I said before... if CHDK could do the trick with no additional hardware, that would be ideal.


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