Engineering Blog

Sharing thoughts, learnings, trials and errors, and analyses about web programming.

networktailscale

Building a Homelab Intranet

A guide to building a homelab intranet with private domains and unified certificates using Tailscale, AdGuard Home, step-ca, and NGINX. It walks through the setup and installation process for securely connecting self-hosted services.

The Math of the Terminal Donut

This post explains the mathematical principles behind rendering donut.c, a 3D ASCII donut in the terminal. It covers 2D projection of 3D coordinates, generating the donut shape with rotation matrices, and expressing brightness using the dot product with a light direction.