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Encoder library for Raspberry Pi for measuring quadrature encoded signals.

Project description

Raspberry Pi Rotary Encoder Library

Encoder library for Raspberry Pi for measuring quadrature encoded signals.


Encoder class allows to work with rotary encoder which connected via two pin A and B (EN11 for example). Works only on interrupts because all RPi pins allow that. This library is a simple port of the Arduino Encoder library (


$ pip install Encoder


To use it, you need to connect pins A and B and GND of the rotary encoder to two pins and GND of the Raspberry Pi, for example 24 and 10. Then just use it:

import Encoder

enc = Encoder.Encoder(24, 10)

You can use two or more rotary encoders:

import Encoder

enc_1 = Encoder.Encoder(24, 10)
enc_2 = Encoder.Encoder(25, 9)


If the encoder works in the wrong direction, for example, it reduces the position when turning clockwise, you just need to swap pins A and B in the code.



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