This device uses 4 servo-driven wheels to slide forwards, backwards, left, right, and turn. Currently under serial or Bluetooth control.
A Rubik's Cube solver able to resolve the puzzle in less then 10 seconds.
A light-tracking turret based on two stepper motors - can rotate about 90 degrees in the vertical and 180 degrees in the horizontal plane.
Stepper motor controlled and 3D printed positioner to allow image scanning using pulsed terahertz waves for detection of breast cancer.