I played around with mission planner and today wanted to do my first camera mission. Unfortunately I clicked to update the apm software yesterday, which radically changed the functionality, so I had to think in the field...
Before I used GridV2 to plan a mission. I'm using what used to be called a relay, but is actually pin A9 on the APM. That is connected to an opto isolator, which triggers the Canon camera through CHDK.
Now, in the new version, I just clicked "survey (Grid)" in the mission planner and this seemed to work. I could load my camera there, input the altitude and it would (apparently) make a nice mission. What I did not notice is that the MP didn't actually insert action waypoints to trigger the camera. *sigh*. So no pics were taken.
Right now I noticed there's a checkbox "Advanced options", which makes some tabs appear. In one of the tabs the actual camera parameters can be verified. In the last one you can make changes to the type of the trigger. Looks like the default is a "camera distance trigger", which I actually used before when set to 40 meters or so, which then generated a valid mission. When I use that, I don't see any waypoints appearing.
I can also set this to "DO_DIGICAM_CONTROL", but I don't know if that's the same as "DO_SET_RELAY". Can anyone confirm it's acting on pin A9 and just pulses that for the set duration in the CAM_DURATION settings in the parameters? I expect this to be up 100ms or so.
On the up-side... the mission itself was executed beautifully without any glitch. And the ground station allowed us to follow that from a telemetry perspective.