This little hack can give you FULL ACCESS to all Ultra OSD functions from DJI googles.

All you need is old camera (as far as it is capable to send some sort of video signal) and few wires / connectors.

Basic idea is to solder connector on the quad side, that has Vin, Vout, CGND and LipoVolts on it, and adapter for DJI googles. Well, you get the rest. Then you pretty much have analog fpv feed without video transmitter. And since Ultra OSD can work at the same time with DJI - you get access to all functionality of Ultra.

Video: Proof of life