The circuit in the shaded section of Figure 1 represents a typical encoder interface that implements quadrature decoding. Here, R3-C1 and R4-C2 provide noise filtering and contact debouncing, with ...

Figure 1 The rotary encoder controls a staircase waveform with precisely defined steps The outputs of an incremental encoder typically consist of two signals in quadrature (i.e., phase-shifted by a ...

Looking at [Andriyf1’s] schematic, you can see each coil connects to an op-amp wired as a positive feedback comparator. The result should be a fairly clean square wave from a noisy input.

He designed a circuit that generates an analog voltage based on the state of those pins. He also wrote a program that can recognize the new analog patterns produced by his rotary encoder and his ...

Since the AS5601 performs contactless rotary position measurement, it suffers none of the reliability problems with which conventional rotary encoders are plagued.