Building a gopro 3 video out to Vtx cable with 5v charge

Does anyone have a diagram for how to build a cable to both grab video out and be able to send 5v into the camera via the Mini USB port . I have built one for video out only, but not sure which USB pins to use for the power supply.
 

Bartman

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Does anyone have a diagram for how to build a cable to both grab video out and be able to send 5v into the camera via the Mini USB port . I have built one for video out only, but not sure which USB pins to use for the power supply.

i'd probably just see which two wires provide power and ground from the other end then just chase them into the mini USB side. the ground is probably common with the video.

let us know how it works out.
 


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