I have a Ricoh GR III camera that can be triggered to take a photo through a USB connection -- +5volts. From what I see, I can do this through the Arduino board. However, I do not see in the Mission Planner software a generic way of triggering the camera -- its either a servo or PWM signal. What would I need to do in order to change the method for triggering the camera? Any recommendations for code modification ? Or is there some 'macro' feature where such add-ons can be included?
I would just use the onboard relay. I use it to control power to my video transmitter. With out looking up the details on your setup I assume you could do something similar.