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Help with triggering a Camera shutter via CHDK

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Hi, I have been trying to make a circuit that will give 4 volts on one extreme and on the other extreme of the same channel 0 volts.

It should operate from a servo plugs signal.

I don't want to hack the camera open to get to the shutter switches contacts.

Any ideas how to do this?

I tried using a servos circuit but the servo board gets very hot even though it does trigger the camera via the switch on the tx.

I would greatly appreciate any help.



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Over at your rc-groups thread I noticed that one fellow mentioned that CHDK2 can decode R/C signals directly. This method seems like a nice/simple solution.


Or how about this one?


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