VisualEncoder

How to use
A turntable is divided by color into black and white.
(Please consult a top picture.)
A terminal is fixed so that a turntable may seem.
A starting button, tap
A sensing line of the A look and the B look is established on the screen.
(The A look and the B look can be switched from the menu.)
A threshold value can be established.
If it can be established, a tap does a sensing starting button.
Above
The rotational displacement, the rotating speed and the direction of rotation are indicated.