Migrating from MyInvoice to MyÚčto: Three Gotchas I Ran Into

I've been using MyInvoice for invoicing for quite some time. Recently it evolved into MyÚčto—a new project by the same developer (Radek Hulán). It shares the same foundation but adds a full double-entry accounting layer on top. The i...

Neusiedl Lake

Once again, we decided to spend our vacation in Austria. Similar prices, better services. This time, we chose the largest steppe lake in Central Europe. The journey from Vienna takes just 45 minutes. From there, you can continue around the lake by train on both shores, with one of th...

MyInvoice and MyÚčto

When I started freelancing, invoicing and bookkeeping felt like the most intimidating part of running a business. Most solutions required a monthly subscription, with the exception of Fakturovač. It served me well for quite a while, although one feature I really missed was mul...

Cheap MacBook

Windows 10 won’t be receiving updates for much longer. Combined with a cheap, albeit quad-core, Intel processor… it’s a deadly combination. Even more so if you’re limited to just 8 GB of RAM while running Windows 10 and Google Chrome. That’s pretty much the end of the road.

So, as...

My first e-ink display

At the BSides Prague 2026 conference I stopped by the Pájeníčko stand and got nostalgic about secondary school... and found some inspiration. For a long time I've wanted a quick global overview of what it's like outside and what my weather station is measuring. The problem i...

Mozart's City

We decided it was time to take our little one on a bigger trip than just travelling around the Czech Republic. We'd already spent a few days in Vienna before, but this journey was on a completely different scale. Why? Because we travelled by train! We changed trains in Vienna and the...

Claude Code

Although I went to a secondary school where we were taught programming and my graduation project was in Assembly (x51), I wouldn't call myself a programmer. At university I didn't put much into it either and did the bare minimum. Though I did really enjoy the subjects on algorithms a...

DNS over HTTPs

Když už jsem se pustil do generování certifikátu pro UDR, udělal jsem certifikát pro AdGuard Home. Aby DoH fungovalo je potřeba mít wildcard certifikát. Active24 má podporu DNS-01 přes API, takže vydání není žádný problém.
Výhoda DoH je v tom, že HTTPs je už otevřené (administrace...

Konec self-signed certifikátům

Rozhodl jsem se nasadit Let's Encrypt certifikát na Unifi Dream Router. Protože disponuju doménou a Active24 je jeden z providerů, který podporuje API přístup ke správě domény chtěl jsem toho využít. To co jsem potřeboval je ověření skrz DNS, DNS-01. Po chvíli pátrán...