back to the questions...!
I have the minim OSD board, 3DR radio transmitter and receiver
I've connected the OSD board to the APM with a Y cable I bought from you
and I've modified the lead to connect to the telemetry radio air module (it's a 4 pin plug not 6)
I have an FPV camera - https://www.unmannedtechshop.co.uk/fpv-camera-520-line-cmos-mini-camera-7g/ from you
this is plugged into the video in side of the minim OSD (not powered as yet)
I can connect with mavlink in mission planner if I connect the radio tx direct to the APM board, but if I connect the OSD I can't connect at all, I've seen a few diagrams that show the radio tx powered from the camera battery, but I was hoping that the Y lead would mean the radio tx was powered from the APM board and all I needed to do was powere the camera.....
I have a wiring diagram of my setup, but can't seem to upload it!