We developed a simple controller to pilot drones/cars/boats/etc. via 3G cellular connection, using a custom PCB on top of a Raspberry A+ with a camera.
Here is a video of test flight controlled via a 64Kbps cellular connection:
A view of the Raspberrry Pi "Hat":
The PCB in a prototype 3d-printed case:
All the source files, schematics and CAD files are open source and on github:
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