Welcome to the personal site of a Swedish software engineer with a passion for web development, embedded systems, birding and folk music!

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Blog

Segno Player: play along on the original score, on any screen

October 25, 2026

Segno Player (https://github.com/segnomusic/segno-player) is an open source web component that plays a MuseScore score's audio on its original engraved pages, with a marker on the bar being played and a cursor that follows the notes. This post covers why I built it, how it works [Read More]

Decision-Linked Development: Giving AI agents the context they need to modify your code

March 25, 2026

AI coding agents write code confidently, but they don't know why your code looks the way it does. DLD (https://github.com/jimutt/dld-kit) is an open source framework that links code directly to the decisions behind it, so agents read the reasoning before modifying anything. This [Read More]

Debugging Svelte apps with the newly released Svelte Devtools

September 28, 2019

A minor nuisance with using Svelte 3 (if you're coming from Vue or React) might be the lack of a browser plugin like Vue devtools, it offers convenient ways to inspect the app's component tree and direct access to component state. There is now a community created devtools extens [Read More]

How to write Go code and make it run on Adafruit Feather or Arduino

August 27, 2019

Did you know that you can use Go for embedded systems (like the Arduino Uno or Adafruit Feather)? TinyGo is a light-weight Go compiler specifically created for that purpose. Though the project is still very young, so there are quirks and missing functionality that hasn't been imp [Read More]

Boost your legacy apps with Svelte 3 components

June 21, 2019

There sure has been some well deserved fuzz around Svelte 3 lately, but maybe not enough? It's an amazing light-weight framework without a heavy runtime and with very little overhead. This makes it a suitable choice for more than just SPAs and isomorphic web apps. Did you know t [Read More]

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