Camera trigger never fully releases

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  • #2418 Reply
    Mark
    Guest

    I’ve been using my freshly built dropcontroller for a week or so now. First with my mirrorless Fuji and now with my DSLR Canon.

    I notice with both of them that they act as if the shutter button is always ‘partly’ depressed. Not enough to try and autofocus but enough that, for instance, I can’t bring up the menu on the Canon while the dropcontroller is plugged in – it ‘sees’ it and closes the menu right away. Same with image preview – it acts as if the shutter button is partly depressed and clears the image preview right away.

    Could I have made a poor connection with the optocouplers that could cause this?

    Or something else?

    It otherwise works beautifully.

    Thanks!

    #2420 Reply
    Martyn
    Keymaster

    You don’t say what optocoupler you are using but it would be worthwhile double checking what connections it uses. Not all are the same.

    If you have a voltage meter, check the voltage going in to the optocoupler and if that is OK check that it is switching.

    The easiest way to check that the chip is working is by using a 3V battery, an LED, and a small resistor (100 ohm or similar). Connect the LED to the camera side (with battery and resistor)of the optocoupler then trigger as usual and see of the LED blinks.

    I would also double check the connections used for the camera trigger.

    Let me know how you get on.

    #10215 Reply
    Spiroc
    Guest

    Increase pulse time i need to have around 180ms for my camera

    #10216 Reply
    Spiroc
    Guest

    Sorry wrong advice about increasing pulse time try like Martin stated

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