Kindly Help

[mrfarooq]

At my school we are trying to develop a rotating disk that can stop at every 10 degrees and complete a full circle (randomly at any point forward and backward). A regular servo motor only turns 180 degrees. Are there servo motors that can make a full 360 degrees turn? My understanding is that continuous servos can't be controlled at random intervals. Is there any way to attach two servos back to back so a full 360 degrees can be randomly controlled?

Your help would be greatly appreciated. My students are waiting.

[adafruit_support_bill]

There are servos which will turn a full 360 degrees: http://www.pololu.com/product/522
The rotational accuracy and repeatability is not great - usually +/- a couple degrees.

Another approach would be a stepper. These are very repeatable and a 200 step (1.8 degree) motor will get you to within 0.9 degrees (worst case).
http://www.adafruit.com/products/324

Yet a third approach would be to mount a rotary encoder on a continuous rotation servo and handle the feedback in your controller.

[mrfarooq]

Thank you very much for your timely reply.