The specimen rotation device was created in order to help researchers at UVA do material science research. The specimens are examined on incredibly small scales, lending itself well to a mechatronics system to rotate the specimen with exact precision.
This was done with an Arduino as the microcontroller and a stepper motor. The specimen gets placed in between two 3D printed pieces, holding it in place. Then, when a button is pressed, the specimen gets rotated a very precise number of degrees by a stepper motor. This allows the researchers to measure the specimen with amazing precision.