Blog

Pico low jitter PID controller

Jan Cumps — Sat, 24 Oct 2026 11:35:22 GMT

In my blog Pico PID controller without floating point using DSP C++ fixed point API , I created a low footprint Pico PID example. In this post, I reduce jitter by making sample clock steady, and let that drive the PID loop e...(read more)

Pico PID controller without floating point using DSP C++ fixed point API

Jan Cumps — Fri, 23 Oct 2026 09:36:28 GMT

This is a proof of concept. A test to show that the generic PID class I wrote with a TI MSPM0, is actually generic.In this post, I make it run on a Raspberry Pico2. The design is a stabile DC voltage supply. Pico PWM generates a DC voltage...(read more)

I wrote a hands-on Raspberry Pi Pico 2 project book — free review copies for embedded developers

micheal.embedded — Tue, 03 Mar 2026 20:07:40 GMT

Hi everyone, I’m Michael I write embedded systems books for beginners and professionals. I recently released: Embedded Systems with Raspberry Pi Pico 2 and RP2350: Projects and Deep Dives The book is built around the Raspberry Pi Pico 2 powere...(read more)

Use the Pico RP2350 in RISC-V mode without Pico VSCode Extension: build

Jan Cumps — Mon, 15 Dec 2025 17:49:52 GMT

Raspberry published a VSCode extension for the Pico family. It's very useful and makes for an easy experience. I use it a lot.But for projects I publish, I prefer that there is no dependency on either VSCode or the extension. That...(read more)

C++ write your own stream class - part 2: a working Pico UART IO stream (embedded friendly C++)

Jan Cumps — Sat, 15 Nov 2025 16:45:18 GMT

In C++ it's common to stream data. You write to a file using the << operator. You read with >>. example: cout << "hello, world! << endl; In this blog I'm making my own minimal in, out and in-out stream class fo...(read more)

modern C++ on a Pico: use C++ Standard Library algorithms - embedded friendly

Jan Cumps — Fri, 07 Nov 2025 18:43:55 GMT

C++ has embedded friendly mechanisms that can help to structure your firmware. While keeping the design resource-lean.In this post, I use classes, C++ stl containers and algorithms to manage close-to-the-hardware resources with object...(read more)

OO Library to handle Pico PIO relative interrupts: library design

Jan Cumps — Wed, 27 Aug 2025 21:10:59 GMT

This post explains the internal design of OO Library to handle Pico PIO relative interrupts: usage and example . I made an Object Oriented library that supports handling PIO interrupts with C++ objects.Goal: let a PI...(read more)

OO Library to handle Pico PIO relative interrupts: usage and example

Jan Cumps — Tue, 26 Aug 2025 19:34:43 GMT

I made an Object Oriented library that supports handling PIO interrupts with C++ objects.Goal: let a PIO state machine call the very C++ object that can manage (or watch) that particular event. For who is this library? It's m...(read more)

OO Library to handle Pico PIO relative interrupts: intro

Jan Cumps — Sat, 23 Aug 2025 16:04:49 GMT

Object Oriented library to design C++ classes that support PIO interrupts. Goal: make a PIO state machine call the very C++ object that's managing (or watching) it. When I designed a Pico library to manage stepper motors with the PIO co-cont...(read more)

Raspberry PIO stepper library documentation - 5: simple ramp up and down

Jan Cumps — Sun, 11 May 2025 10:39:03 GMT

Raspberry PIO stepper library (pio_stepper_lib) is a C++ library that runs stepper motors in PIO state machines. It's intended to be easy to integrate and use in Pico projects. In this post: create ramps when motor starts, stops or changes direc...(read more)

Raspberry Pico stepper driver IC library, with example: Allegro A4988

Jan Cumps — Wed, 30 Apr 2025 14:28:41 GMT

Pico C++ library for Allegro A4988 stepper driver IC. I created a generic stepper driver library, and made a first example: Raspberry Pico stepper driver IC library, with example: Texas Instruments DRV8711. In this post, I create a pl...(read more)

Raspberry Pico stepper driver IC library, with example: Texas Instruments DRV8711

Jan Cumps — Sat, 26 Apr 2025 13:33:28 GMT

While designing a library for stepper motors, it bothered me that I had to put stepper driver IC logic across my user code.To solve that, I made a little driver lib. First I looked what logic shabaz and I put in our stepper projects, and s...(read more)

Raspberry Pico: talk to ICs with active high Chip Select (CS)

Jan Cumps — Fri, 25 Apr 2025 10:10:07 GMT

SPI ICs usually have an active low chip select pin (~CS, nCS, ...). I have a Texas Instruments IC (stepper motor driver DRV8711) that has an active high CS. Initially, I bit-banged the CS pin: set it high with the GPIO API before communication, ...(read more)

Raspberry PIO Stepper Library: Trying it out with a Pi Pico and two Stepper Motors!

shabaz — Wed, 23 Apr 2025 19:13:36 GMT

Stepper motors are super-useful for precision movements. I made a little stepper motor board a while back, but never got around to testing it at the time. Jan Jan Cumps has created a stepper motor control library (click here to learn a...(read more)

Raspberry PIO stepper library documentation - 4: understand the step frequency

Jan Cumps — Mon, 21 Apr 2025 17:47:28 GMT

Raspberry PIO stepper library (pio_stepper_lib) is a C++ library that runs stepper motors in PIO state machines. It's intended to be easy to integrate and use in Pico projects. In this post: the frequency of the pulse train it generates, and how...(read more)