Best posts

• Cheating at chess with a computer for my shoes. A Raspberry Pi in my pocket, buttons and vibrators in my shoes.
• How to convert a 6040 CNC machine to Grbl. Replacing the USB interface from a popular Chinese CNC machine with an Arduino running Grbl.
• Secrets of the Medtronic MyCareLink Patient Monitor. I acquired a piece of medical equipment and cracked it open to see what was inside (spoiler: it's a Linux system, I know this!). Quite an interesting reverse-engineering exercise.
• Hiding messages in chess games. A stegosystem to encode data in the moves of a chess game. I'm quite proud of this.
• How I cracked the Bitcoin keys in Andy Bauch's Lego artwork. An artist released a bunch of pictures of his artwork that used a secret encoding to store Bitcoins, and I managed to win some of them.
• I made a mechanical keyboard with 3d-printed switches. 3D printed mechanical switches, 3D printed case, and 3D printed keycaps. It works, but it sucks.
• A weird rotary axis for my CNC machine. A rotary axis that doesn't require any extra stepper motors! It is driven by a toothed rack mounted on the table. Moving the machine around in the Y axis causes the rotary axis to rotate at the same time. I also have some usage notes.