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Topic: >5V trigger (switch) with 3.3V (Read 169 times) previous topic - next topic


Hi everyone,

I can't solve my problem.. working with an arduino 3.3V, need to trigger a camera shutter which needs at least 5V. I do have 5V or 12V available.

The problem is that the trigger GND and the camera GND are common, which means I do have to give only +5V or +12V.

Any suggestions? (BJT, optocoupler, 3.3v to 5v adapter...?)

Thank you


A level shifter ?


It even has the circuit so you can make a 1 channel version yourself (if you can solder an SMD component).


Dec 07, 2017, 09:40 pm Last Edit: Dec 07, 2017, 10:09 pm by Mikeb1970
I like that solution, never seen it before, but will definitely use it one day, as a matter affect, I'm gonna order me some.

I ordered 10 pieces 4 channel bi- directional for $2.49

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