My current grand project will involve adding arduino support to my existing steampunk camera (see my icon). One of the things I want to do is fire the camera via a telegraph key as a shutter release. Now shutter releases have 3 wires that complete a circuit in them, ground, focus, and shoot. Since the telegraph key that I own is a simple spsd switch with just connected, not connected states, I was going to have the arduino do the 1/2 press action when the key is pressed, and the shoot action when it is released. That is fairly straight forward.
However, I'm thinking about having a secondary control panel, and I would like to have a button that more mimics a shutter release, but is small as the breadboard buttons. Is there a momentary push button (not a toggle or dip switch) that if you push it in 1/2 way, completes one circuit, and if you press it further, it completes two circuits?
I could cut up a cheap shutter release, but the button part is still larger than I want. Or I could just use the aux. button like the telegraph key, and have the camera fire when the button is released. So is there a similar button to a camera shutter button that I can buy?
Thanks. 8)
