Rotary Encoder - EC11 - 20mm

A rotary encoder with 20 steps per revolution. Rotary encoders are widely used in volume controls.
This rotary encoder can rotate and does not have, like almost all potentiometers, a start and end position.
However, rotary encoders must be read digitally. Based on this, you can determine the direction in which the rotary encoder moves and how many steps have been taken.
This rotary encoder also has a push button built in for example to select something (between pin D and E).
The rotary encoder can be read out by means of pin A, B and C (check images for signal path).

A standard potentiometer knob can be attached to the rotary encoder.

See the images for the sizes and the explanation of the pins.

See the following page for a tutorial in combination with an Arduino Uno: Improved Arduino Rotary Encoder Reading

Check the tab "Downloads" for more information and/or downloads.