New cam, what do you think?
Akaso 7 le, $100, 33g including case. I should probably redo the case in TPU, when I get some.
It powers off of the drone battery->5v bec->usb pins, with automatic recording on startup. The USB C port is still entact for powering off-drone use/testing.
Keeping the mic & buttons only costed ~2g, and it would probably survive without the heatsink for a gram or so savings.
You can change settings over wifi, or plug in the rear touch screen with a ribbon cable.
The build was pretty straightforward, simple disassembly, with a lightweight case. I could make a full case for an extra 5 grams, but my experience is that they do next to nothing in a crash, and I'm not worried about weather.
The only tricky part was soldering the back of the usb c port, as the auto-record-on-power feature is on usb only. An easier solution would be to use a usb c plug breakout board, and connect power from there.
Anyways, it's nowhere near a gopro in image quality, but at least it gets the damn video instead of stopping randomly/overheating/glitching out mid flight!!