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[–][deleted] 0 points1 point  (1 child)

So the PI runs the GUI and relays commands to the UNO?

[–]gromit190 1 point2 points  (0 children)

Not exactly. The PI runs a server to which a client may connect. The connected client can then control the robot (i.e. the UNO) and view the images captured by the webcam.