Didn't had to fix anything (so far). But took my dev laptop to show all the projects I've been working on to the dad of my girlfriend and he showed me his projects.
He's not mainly a dev, but an electrical ingenieur. He designs his own pcb boards (with 8bit processors on them, as "that's more than enough power to do almost anything!") and then programs that stuff with basic (he writes his own firmware for it).
He also creates desktop application to get data off the devices using Delphi.

Love that guy and have a shittln of respect for him!