System Online

John Chai

Full-stack hardware engineer who occasionally sidequests software. This text is a placeholder and should not be appearing, please let me know if you see this.

Sector: Recent Articles

Latest Posts

Feb 23, 2026 — 1 min read

Test post

a test post

Feb 1, 2026 — 1 min read

Building an Article Graph with D3

How I built the interactive article relationship graph using D3's force layout.

Feb 1, 2026 — 1 min read

Hello World

First post on the new site. A quick look at how this site was built.

View all articles →

Sector: Projects

Recent Projects

active

johnch.ai

This website. A personal site built from scratch with HTML/CSS/JS and a custom Node.js build system.

View all projects →