rocu.de

I started building websites back in 2001—using HTML, PHP, image buttons (because web fonts weren’t a thing yet), and cutting-edge table-and-iframe layouts 🙈.

The web has come a long way since then—and so have I.

For the past 17 years, I’ve been building complex web applications for a living, mostly with PHP and Ruby on Rails.

These days, I mostly blog about daily life, my bike tours, and occasionally some technical insights.


Blogposts

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Spotted this on the e-ink subreddit and immediately ordered one. A custom solar energy dashboard, running for months on a single charge — sold.

What makes TRMNL special is the philosophy behind it: fully open source, hackable by design, screws instead of glue. Don't want to build your own hardware? Just buy the assembled version. Don't want to depend on their cloud? Run one of several self-hosted server implementations — including one maintained by TRMNL themselves.

That last part is what gets me. A company that open-sources its own server backend isn't just paying lip service to the maker community. That's genuine commitment.

The plugin ecosystem (900+) and the no-subscription model seal the deal. This is how hardware products should be built.


Virtua
Virtua
Karl Olsberg
★★★★☆

I liked the overall plot of this book. However it is maybe a little bit to pessimistic about AI. Only time will tell 🙈


The Magnesium Miracle
The Magnesium Miracle
Carolyn Md Nd Dean
★★★☆☆

Valuable information about magnesium deficiency and its wide-ranging health effects. Unfortunately, the book frequently reads like an infomercial for ReMag, the author’s own magnesium brand.

Worth reading, but with a critical eye.


Crying in H Mart
Crying in H Mart
Michelle Zauner
★★★☆☆

Finished reading: Crying in H Mart from Michelle Zauner.


Project Hail Mary
Project Hail Mary
Andy Weir
★★★★★

Finished reading: Project Hail Mary from Andy Weir. What a great book! I especially love the alien / human cooperation.


It is quite beautiful here on Mallorca. I am enjoying my time here with a rented bike.

Mallorca is truly beautiful, and I’ve been enjoying every minute of my time here — especially on a rented bike. I picked up my bike from Huerzeler and based myself in Playa de Palma, staying at the Occidental Playa de Palma. From there, I set out on daily rides that together added up to around 1,100 km of cycling across this stunning island.

One of the highlights of the trip was riding all the way to the Formentor Lighthouse (Faro de Formentor) at the northern tip of Mallorca. Perched high on rugged cliffs with incredible views over the Mediterranean, it’s an unforgettable destination and a must-see landmark on the island.

This definitely was not my last time on the island.


Despite the freezing temperatures of around 2 degrees Celsius outside, I find immense joy in riding my bike this year. It’s one of the first winters where I’m brave enough to venture outside and try my luck. The rewards are empty trails and sometimes quite beautiful fields of fog.


A little tour around my desk in 2025
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I just wanted to share a short update on my workspace in 2025, along with a few thoughts on the devices I’m using and their quality. 🙂 Mac Mini M4 Pro I love the new Mac Mini. Since I’m working 100% remote at the moment, it’s absolutely sufficient for me as a computer. I mainly use it for all my ...

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I’m really happy with my new job as a developer at CONSUST!

I get to spend my time building features that make it easier for companies to deal with their carbon footprint – reporting, assessing, reducing.

It’s fun to work on something that actually solves real problems and helps people get rid of those endless Excel sheets.


Book review: Atlas Shrugged by Ayn Rand
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I really enjoyed this book by Ayn Rand. First of all it is an interesting story, but it also makes you think. It challenged me to rethink whether it’s always right to expect everyone to work for the “common good” or to distribute everything based purely on need. Don’t get me wrong—I’m not a fan o...

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I'm genuinely impressed by the quality of iPadOS 26. I recently picked up a used 11" iPad Pro M3 + Magic Keyboard, and it's almost like using a smaller MacBook (in the best way). The best thing - if i take it out of the case its still a great entertainment and surfing device.

The iPad Pro powers my Studio Display, handles my Switch via capture card, and window management finally works well.

If there were a proper native IDE (not just VS Code in a browser), I’d seriously think about ditching my MacBook Pro.

For non-developers, this could easily replace a laptop.


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I'm really happy with my new VSF Fahrradmanufaktur TX-800 :)

I've ridden it for around 2,700 km since end of March so far, and it's proven to be an absolute tank — tough as nails and nearly indestructible. That said, it's a bit of a challenge to ride in the Alps!

What I really love is how comfortable it is on long rides, how well it handles, and how reliably everything just works.

I love how comfortable it is on very long rides, how good it handles and that everything just works.


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I just finished reading Tidy First by Kent Beck. 📚

This is a relatively short and accessible book, but full of valuable insights. I especially appreciated the concept of micro-tidying—small, incremental improvements that aren’t full-blown refactorings, but still make the codebase more understandable and maintainable.

Kent Beck also dives into when to tidy your code, how to split pull requests effectively, and how to think about the time spent tidying as an investment. He offers a thoughtful perspective on balancing short-term costs with long-term benefits throughout the software lifecycle.

Definitely worth a read if you're interested in writing cleaner code with intention.


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I'm back to using a dual-monitor setup and re-discovered the Sidebar app —a customizable Dock replacement for macOS. Among its many features, it allows you to have a separate Dock on each monitor, which is incredibly useful. I'm genuinely impressed by how flexible Sidebar is and how much it has improved over the past few years.


Travel Report: From Dachau to Bologna in 5 Days
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I bought a new touring bike and after some shorter trips I decided to plan a multi-day trip to Italy, across the Alps, starting from my home-town Dachau. Day 1: For the second time this year, I’ve ridden this route into the Inn Valley. But once you descend towards Jenbach, you know you won’t be t...

Finished reading: The Wind-Up Bird Chronicle by Haruki Murakami. 📚

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The Wind-Up Bird Chronicle
Haruki Murakami

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Finished reading: Endurance Racing and Training by Dr. Philip Maffetone 📚

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Endurance Racing and Training
Dr. Philip Maffetone

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Finished reading: Tanz mit dem Schafsmann by Haruki Murakami 📚


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Finished reading: Wilde Schafsjagd by Haruki Murakami 📚


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Finished reading: Vinium by S.H. Jucha 📚


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Finished reading: Four Thousand Weeks by Oliver Burkeman 📚


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Finished reading: Im Schatten des Shogun by Wolfgang Schwatke📚


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Finished reading:  The Passage by Justin Cronin 📚


How I sync my Remarkable and my online calendar.
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I’m still enjoying my Remarkable Paper Pro. It’s part of my early morning routine: I use it to write morning pages, read books and the newspaper, and plan my day. It’s simple and does what I need it to do. I also love how they improved how it renders color with a recent firmware-upgrade. I also u...

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Finished reading: The ferryman by Justin Cronin. 📚