I have ordered valves and RCA/Phono jacks online which may take some time to get delivered so meanwhile I’m trying to test the camera (shutter+focus) connection circuit alone with D10 & D11, which is tested okay with those LEDs. So I’m testing camera connection to the stereo socket without waiting for valves circuit to be ready. I did it to make sure stereo socket is connected rightly with camera trigger cable, as I was confused to see 5 pins on the socket(I do not come from electronics background). does this test make any sense? or should I test it later only when valves and RCA/Phono jacks are available with me. while doing this test camera is fired but not always when I click start button on Android app.