Justin Nel
South African programmer living in Tokyo. I write about the craft between bits and products: AVR C, Go, C#, TypeScript, tools, systems, small game experiments, and the rabbit holes that keep pulling me toward the next thing.
Latest · June 1, 2026 Building a Local-First Document Workflow Prototype →
Latest Building a Local-First Document Workflow Prototype
A high-level look at a recent client project: turning messy document intake into a structured, auditable workflow without exposing the client details.
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Building a Local-First Document Workflow Prototype
A high-level look at a recent client project: turning messy document intake into a structured, auditable workflow without exposing the client details.
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Finding My Feet
Settling into Japan properly: new friends, better health, too many crane games, and personal projects coming back to life.
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A long overdue update
Catching up after a few quiet years, from Sweden and Cyber Lane AB to Japan and Cogent Labs.
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KidSpeak in Lund
Kidspeak is coming to Lund, Sweden
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Another site for my content
Separating personal, professional, and project content across Cyber-Lane, Justinel.com, and future Kidspeak updates.
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Why Cloudflare gives error 522 to my NodeJS app
Debugging Cloudflare error 522 on a self-hosted Node.js app and discovering why port 80 still mattered for HTTPS traffic.
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Cloudflare Dynamic DNS
A small Node.js script that checks a public IP address daily and updates a Cloudflare DNS record for dynamic DNS.
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Finding MSBuild with Windows Batch files
How to find MSBuild within a batch file
Things I've built
Kidspeak
A programming and technology event for kids, running in Sweden since 2016.
Snow-Meep
A light-up snowman soldering badge kit for events and workshops.
Soldering Is Easy
A beginner soldering kit — a light-up flower badge for events and workshops.
Space-Buddies (Kickstarter)
An open-source electronics kit that teaches soldering, surface mount, basic circuits, and programming in C.