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Side projects

Things I build.

Software I build for the fun of it, or to solve a problem I actually have. Most of it runs on my own machine and my own tailnet — designed, built and operated end to end by me.

Open any of them for the case study: what it is, the decisions behind it, and what I took from building it.

  1. 01

    Aura

    In use · evolving 2026–Present

    A home for my AI assistants — identity, tools and work to come back to.

    • .NET 10
    • React
    • PWA
    • SQLite
    • Agent adapters
    Read the case study
  2. 02

    felixdiez.com

    Live 2026

    The site you're reading — built to be edited from my phone.

    • Astro
    • TypeScript
    • Content Collections
    • RSS
    Read the case study
  3. 03

    Soma Tracker

    Live 2026–Present

    Built my own tracker, then taught a bathroom scale to talk to it.

    • .NET 10
    • SQLite
    • Python
    • Raspberry Pi
    • Bluetooth LE
    • Tailscale
    Read the case study
    Soma Tracker on a phone: today's weight, the smoothed trend and a 90-day chart