KY-040 Rotary Encoder, Module Compatible with Arduino

With  rotary encoder KY-040, you have the opportunity to simulate a volume control or simply count. The knob on the rotary encoder can not only be rotated, but also pressed. So you have even more possibilities. Rotary encoder KY-040 has no fixed end position. You can keep turning it as many times as you like. Rotary Encoder fits  Raspberry Pi. Use the rotary encoder as a control for a motor, as a volume control or as a menu control.