Together with my coauthors, I’m happy that our paper with the title “Scaleable multichannel square-wave sequence generator based on the RP2040 microcontroller” has finally been published in The Journal of Engineering Volume 2025, Issue 1, published by John Wiley & Sons Ltd.

The paper describes how multiple Raspberry Pi Pico modules (RP2040 chip) can be synchronized and utilized to generate multichannel signal patterns. We use this circuit in different applications to control ultrasonic phased arrays in our laboratory. It took several tricks to get the system working, and I had to read the datasheet multiple times. One thing I learned while preparing this paper was that it is possible to run programs across multiple Picos with clock-cycle precision.

The paper is published as open access under a CC BY 4.0 license. I’m thankful to the Helsinki University Library for supporting the OA publication. You can find the paper at 🌐DOI:10.1049/tje2.70067