A screen that tells you when the next train is coming, built with the same complexity as a Mars mission. It all started on the blue line to Kista , riding Stockholm’s Tunnelbana. Half asleep, I was staring at the glowing “next departures” board when it hit me: "What if I built one of those for home?" Sure, I could’ve just opened an app like any normal human, but I chose the long, slow, bug-ridden path. Naturally. A while later, for my birthday, Roberto gave me a Raspberry Pi Zero 2 W . Why? No idea. But clearly, it was fuel for my urge to overengineer things. With that little board in hand, my fate was sealed. Weeks later, we went to a Hopsworks meetup in Södermalm. Being a good Scandinavian tech event, it was full of beer. And not just any beer— Hopsworks has its own craft beer line , with labels that look like they came straight out of a DataFrame. Absolute chef’s kiss. They were showing how they use the Trafiklab API to feed an AI model that predicts public transport del...