Mark Rober invited engineers and makers to CrunchLabs Casino to build and test devices for cheating at casino games. Cheating itself was allowed, but getting caught was not.

The creations included a remote-controlled robotic poker chip that could move a roulette bet after the wheel stopped, dice whose internal weighting could be changed with heat, and a concealed wearable card-counting assistant. Another contestant hid a pinhole camera in a sleeve and used computer vision to reconstruct the order of a deck.

Maker zomb23 built a drum machine around a rotating cylinder covered in LEGO studs. Orange pieces are placed on the grid to program beats, while a smartphone camera watches the cylinder and triggers sounds according to which pieces reach the front.

Spin the cylinder faster and the tempo increases; turn it the other way and the sequence plays in reverse. A software-style step sequencer has been turned into a physical object you can reprogram with LEGO and control by hand.