Send RC joystick commands over eth to drone

I want to use my TX-12 as a joystick input to QGC (or Mission planner) and forward the joystick command over ethernet to a drone (basically fly the drone using a wire, not RF emissions). Is this possible? I tried QGC (and MP) with no success. The attached diagram is a hack I thought of. Using a ground PI5 (green box) to forward receiver outputs (via eth) to a PI5 on the drone (which forwards to the FC uart). Do this make any sense? Any advice greatly appreciated.

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I don’t know what TX-12 is but what about using a joystick with QGC?

Hi
As far as I understood your problem that you have to fly the drone in tethered mode. If that’s the case then as Julian suggested you can used joystick directly to QGC and eliminate the PI on ground and connect the ethernet from GCS directly to your PI on air to fly.

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