I build whateverI think up.
I'm Leo. I'm based in Switzerland, and I build across the full range of what technology allows: PCB design, homelab infrastructure, SaaS products, Mac software, and security tooling. If the idea is interesting enough, it gets built.
About
Hi, I'm Leo.
I build and write things down.
I'm a software engineering apprentice in Switzerland. Next to the apprenticeship I run Aeternum Software, a small software company I started with a friend. Our main product is DriveFlow, scheduling and billing software for Swiss driving schools.
The rest is what I build because I want it to exist: a home server that replaced my streaming subscriptions, open-source hardware, a Mac app, a security toolkit. The projects below have the full list.
I write down what I learn. The docs hold step-by-step homelab guides, and the blog covers things like PSP custom firmware, self-hosted media and rolling back an app update. If one of them saved you an evening, that was the point.
Writing
Things I write
when I figure stuff out.
Most read
Personal projects
Things I built
for myself.
- DailyBite Social, 2026. Daily food combo picks for Switzerland. Social layer built on top of local supermarket data.
- DriveFlow SaaS, 2026. Management software for driving schools. Scheduling, students and instructors in one platform.
- BlindSpot Mac App, 2026. Select any text, press ⌘⇧Space. AI answer streams in a floating overlay invisible to screen recording.
- UnyxRF Hardware, 2025. Open-source PCB for the M5StickC Plus 2 with RF and storage module support.
- Homelab Infrastructure, Ongoing. Proxmox VE running HaaS, Minecraft, Docker-Host and more. Self-hosted everything.
- HackStarter Kit Security, 2023. Educational toolkit covering WiFi deauth, BLE manipulation and RF analysis, with notes on mistakes to avoid.
- BeThere (discontinued) Social, 2025. Real plans, not group chats. Event planning social app for organizing hangouts with friends.
Contact
Got something
to say?
Project idea, question, or just a hello. Fold it up and send it over.