In a test circuit built with C3 = 1nF and R6 = 100kO (giving dt ˜ 100µs), the actual step size was measured as 59.7mV. Figure 3a Output waveform created by CW and CCW encoder rotation (4s/div., 2V/div ...

For an encoder with 20 increments per revolution, this is equivalent to 40 pulses per second, or a signal period of 25ms. Therefore, when the encoder is rotated faster than two revolutions per second, ...

Rotary encoders are pretty interesting pieces of technology. They’re a solid way to accurately measure rotation including the direction. [David] recently wrote some software to handle these i… ...

Rotary quadrature encoders often are used to command digital potentiometers or digital controllers, ... The circuit shown in Figure 2 initially debounces the switch signals.

[Rupert] got his V-USB/ATtiny85/rotary encoder circuit working, and at the expense of a ‘mute’ control, also added an awesome looking RGB LED ring powered by Adafruit’s Neopixels.

In devices which use rotary knobs, the AS5601 and its paired magnet may replace a rotary encoder without any change to the host microcontroller or its application software.