Servo position control via PC

Image of experimental setup. The PC control panel sends a signal to the micro-controller board and changes the position of the servo

The position of a servo can be controlled with a Micro-Controller (MC) board that recieves singals from the PC. This picture shows an example setup that I created to control the servo position with a PC control panel. When the slider is moved in the control panel, a digital signal is generated and sent to the MC via USB connection. The MC processes the signal and sends an equvalent electronic impulse to the servo. Thus the servo changes position according to the electrical signal. For this example I used Python and the Tkinter (GUI) library to create the control panel and Arduino's sketch tool to program the MC.
A real-time video of the application can be found at: http://www.youtube.com/watch?v=cI-eiEtxchc
The scrip and sketch for the MC data can be found at: https://www.dropbox.com/sh/ip306uavm7jpekg/uiElcgcgWg/Servo%20positioning%20control%20from%20PC