The Lights simulate Focus and Shutter actions.
1) DPST Switch (Open Exposure)
2) x2 Push Buttons (Focus & Shutter)
3) x2 NPN (Switches)
4) x2 Diodes (Prevent Shorting)
The 3.3V battery simulates the signal from my raspberry pi.
The 3v battery is just used to actuate the lights and simulate Shutter & Focus.