A high-performance, zero-CPU-overhead quadrature encoder library for the Raspberry Pi Pico (RP2040/RP2350) using the hardware PIO (Programmable I/O) subsystem. This library wraps complex PIO register ...

Encoders come in different types. Most people are familiar with quadrature encoders, which use two pins that change state sequentially in different order depending on the direction of rotation. One of ...

An unexpected revisit to my earlier post on mouse encoder hacking sparked a timely opportunity to reexamine quadrature encoders, this time with a clearer lens and a more targeted focus on their signal ...

What is a rotary encoder? Rotary encoders are common household appliances such as the volume control knob on the speaker. There are also linear encoders but I will discuss that later. Rotary encoder: ...

As you may have noticed, I’ve been working with an STM32 ARM CPU using Mbed. There was a time when Mbed was pretty simple, but a lot has changed since it has morphed into Mbed OS. Unfortunately, that ...

Rotary quadrature encoders often are used to command digital potentiometers or digital controllers, and quadrature decoding is typically performed in a programmable device (like an FPGA or ...