Joonas Javanainen
gekkio.fi
Joonas Javanainen
@gekkio.fi
Hands-on soft-/firm-/hard-/gate-ware consultant @ Merulogic Oy during the day, hardware research and emulators in evenings. Game Boys, Rust, husband, alopecia patient
On the way to Oxidize conference in Berlin. If you want to chat about Rust, Game Boys, or any other interesting topic, look for a bald (and bold) Finnish guy 😃
September 16, 2025 at 1:15 PM
One of the most annoying UX behaviours is showing an "empty" result when there's a technical error, and not indicating the error at all.

Spotify search? "lol no results found for X"
Mobile app of my *bank*? "lol you have no accounts"
Accounting software? "lol you have no invoices/receipts/anything"
May 25, 2025 at 11:51 AM
Maybe I'm weird but the fact that LibrePCB is strategically moving towards Rust is quickly making it more attractive to me. I've been a happy KiCad user for almost 10 years but I've seen my share of crashes, bugs and various "C++ problems".
March 27, 2025 at 7:30 PM
My opinion about USB-C was forever changed when I recently watched in horror as somebody shoved a USB-C cable into a USB-A port, shorting the pins with the USB-C plug shell.

The idea of having a computer with no USB-A ports and *only* USB-C doesn't seem so silly anymore... 😅
March 17, 2025 at 2:51 PM
Age yourself with the first computer you used.
February 17, 2025 at 4:10 PM
Finished testing this *35-year old* CR1616 battery on this Game Boy cartridge.

CR1616s typically have a 60 mAh nominal capacity (with a 30kΩ load). In my test I got 31 mAh out of this battery with a 10kΩ load until 2.0V cutoff so the battery had *at least 50%* capacity left after 35 years. Wow!
February 2, 2025 at 6:51 PM
Thanks TI website for this lovely validation error 😅

I guess what they really mean is "domain name", not URL (or URL without protocol? 🤔), but in any case "Please enter the URL in English" is one of the worst validation error messages I've ever seen
January 25, 2025 at 3:02 PM
Mwahaha, somebody at Github pushed to production and messed up the home page a bit 😅 my feed is now sorted oldest to newest for some reason
December 5, 2024 at 3:30 PM
Why is it always the big corporations with all the money in the world that have the worst websites that are down exactly when you need them?

Würth and Samtec, I'm disappointed! 😬
November 22, 2024 at 3:36 PM