USB Rotary encoder - Martin Hubáček - apps & electronics junk
Interfacing Rotary Encoder with AVR Microcontroller (ATmega8)
Interfacing Rotary Encoder with AVR Microcontroller (ATmega8)
Interfacing rotary encoder to AVR microcontroller - Do It Easy With ScienceProg
Arduino Enigma Machine Simulator : Pure software debouncing of a noisy RE11 Rotary Encoder / Audio Digital Potentiometer without using external capacitors
Rotary encoder interrupt service routine for AVR micros « Circuits@Home