Well hope that you get much needed HELP here and can dig in and get er back to being Very Normal........your right Russian Drone...its different ! "Good Luck on this endeavor "
Thanks, I think I am slowly narrowing down the problem being not with the SD card or camera sensor board but the board behind it, the encoding board that compresses the video before saving it to the card. The same board is what compresses and sends the image to your phone so you can see your camera while you fly. I think there might be a power leak somewhere or a bad ground that isn't giving the Ambarella encoding chip enough juice to run at higher resolutions. A very generous guy on a DJI Reverse Engineering forum gave me lots of insight into how this stuff works, so with his help hopefully I'll start making some progress:
"
If your device can handle some badwidth, but stops wortking on full load, then either:
- Ambarella chip itself is damaged (unlikely)
- One of the wires between sd-card and Ambarella is slightly damaged (its impedance is affected enough to not be able to continuously transfer high frequency data)
- Your SD-card is not liked by Ambarella (seriously, for some reasons Ph3 Std is very picky in regard to sd-cards)
- Power supply for Ambarella is not good enough to withstand high load from the chip (this seem most likely to me).
If you have a proper equipment to test that, I'd verify if there's voltage drop on Ambarella power lines just before the issue."
