I'm trying to debug my minimosd thats being massively affected by my single battery setup. Everything looks great until I arm my quad. Usually I loose the OSD right then, then as I power up the throttle I get big glitches till I loose the video feed completely. I have figured out this is all due to my OSD and what I assume is some kinda ground loop. My setup is a single 4s battery. I have 5v power coming from the telemetry port of my APM, ground to gnd or blk (tried both no difference), and RX. I have my pads soldered to deliver 5v to the other side of the board. On that side I have vtx to vout, and ground to vtx ground. From the gopro camera I have Video in to Vin, and ground to the mini usb ground on the gopro. Here is a video of what I am experiencing. If anyone can give me some advice without going to a separate video battery that would be great! Thanks.
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Yup that solved it. I didn't expect that the 5v out from the APM would be so dirty. Tapping the 5v off my 5v ubec completely solved my issue. Thanks.
Voltage regulators between the Lipo and the video kit should filter out the noise affecting the video quality. Alternatively, powering the video kit with a low noise. high quality UBEC, should also do the trick