I'm building an interactive puzzle into a 1940s Maddox secretary desk. There's a time-traveling AI named Calvin trapped inside, and he talks to you. Solve a puzzle, a drawer opens, and the next puzzle relocks itself with motors. Under the hood it's a Raspberry Pi, an Arduino, a pile of parts printed on my X1C, and a lot of trial and error. This is where I'll log the build, the wins and the fails.