I'm working on a prototype where I'm controlling my DSLR using BLE module.
I found many tutorials to trigger shutter release using Arduino on the internet.
So far, I have found optocoupler to be the safest option.
Is there any Better than optocoupler ?
How does original intervalometers/remotes for Canon & Nikon work ? Even they use optocouplers ?
As I'm planning to release my prototype in the near future as product, I don't want to endup damaging users cameras.
Note : My board works on 3.0 V