"Andy, yes, it's pretty simple primary because my knowledge of analog circuits is pretty simple and limited too :)
You're right Vsyncout is intended to generate standalone OSD without external video source. I was excited about idea of ground side OSD…"
"I'd like to also mention my project here. Unfortunately I don't have much time anymore so can't actively work on it, but maybe someone can inspire (it's fully opensource & openhardware). It's combined flight controller and OSD board called Draco.…"
"It looks good to me, certainly better than CANAerospace for our purposes IMHO. You are trying to be quite complete with specification and even try to cover connectors, pinouts etc., which is good, but still there is a thing I'am missing. Do you…"