That’s the idea behind this Arduino-based measuring jig for fabricating ... and a roller with a paper encoder wheel bears on the tube under spring pressure. By counting pulses from the optical ...

The business end of Kino Wheels is a pair of DIN 950 140mm ... bearings and attached to 600 pulse/rev rotary encoders, which are read by an Arduino Mega 2560. The handwheels are mounted orthogonal ...