Hi folks, I’m a total noob so forgive what may be a really easy to answer question.
One interest of mine is night photography and long exposure shots. I use a very good app on my iPhone but I am unable to always be around to manually operate the camera.
There are various ways to trigger the shutter, one of them being a cheap Bluetooth button.
Essentially, it’s a simple thing but it turns off after a while.
What I would like is to interface this button to the pi so I could run unattended long exposures at night. As this little shutter release also has a button for android phones, I was thinking I could trigger that one every 60 seconds or so as a keep alive feature.
I’m not sure where I stand on voltages and direct connection to the GPIO pins. It’s operated by a 1.5v coin battery if that helps. I was thinking an opto isolator for protection but have read that these can pull too much current from the Pi.
There doesn’t seem much info on the net for this, hence the question..