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I've not looked at the EDUbotics specifically (Ian has ours), but most servos I've seen work on the basis of you sending it a "number", and it turns to the angular position corresponding to the number. It uses a feedback loop inside the case : the motor is geared down inside the case, and the output shaft is coupled to a potentiometer, which sends rotation data back to the internal controller. There is no way to get feedback from inside the case without illegal "tampering".
You should determine the position you need the servo to assume, and try things out to find the "number" to send to get it there.
If you need to find 'x' in the formula number = x degrees, send zero, and note the position. then send 254 and measure the number of degrees (about 180 with the full fledged RC). Each Number then gives 180/254 degrees, using these numbers.
That is some school building you have there. :-)
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