Disclaimers:

- You WILL void your warranty.

- Author is not responsible for damage to your property, reversible or not.

- You may destroy your device permanently.

- Even if you successfully pull off whatever is presented here - you may be one static discharge away from ruining your equipment.

- Project includes working with sharp objects and LiPo batteries - use necessary caution.

- You have been warned.

Final result to gain attention:


And some trivia after the break.

So, initially I was trying to slap together a chain of PC->HDMI/AV converter->5.8GHz VTX---> VRX (goggles) to see if it's possible to receive whatever it is displayed on the monitor through this contraption.

Turned out it is not - apparently most of those cheap HDMI converters upscale (or, as they claim) the picture to 1080p which is a no-go in cheap analog FPV video system. VRX says it gets "a signal", you get jittery black picture on your screen, but nothing of value.

A bummer! Because converter output, no matter how "full HD" it says it is, can be displayed totally fine on any low resolution monitor with analog input i've had laying around.

So then i thought - maybe these goggles are modular/commonly structured enough for me to hack in some aux video input, or atleast cut the receiver video and add in my own source, with a risk of ruining the goggles completely.

And turned out - it's totally possible. 5.8GHz VRX is such a recognizable part with pinout so common (it's everywhere and you can memorize one - it will be valid on another similarly looking shielded part) that it's basically possible to find it on the board, follow it's video output trace and splice your own signal in.

Though in my case it was rather "splice a bit further than i wished initially but that is fine too". It also helps that LF analog video signal is rugged enough (can't believe i'm saying this, having some background in CCTV industry where signal distorts every time you look at it in a funny way) on this scale that most of the hacks give acceptable picture quality without much shielding around. YMMV though - this project is a total violation of best practices in RF engineering, reiterating: you have been warned.

Requirements: 

Optionals: