Time Twister 4

Time Twister 4 is a digital clock built entirely out of LEGO bricks.

The clock display is made up of a matrix of cubes that can be pushed out to show the time.

Each digit is powered with a motor that drives a conveyor belt with small knobs arranged in patterns that affects a mechanism that pushes or retracts the cubes.(The 10-hour digit is simpler since it only needs to show the digit 1 or no digit at all)


  • Movement:  Two LEGO Mindstorms NXT Intelligent Bricks. Five Servo Motors.

  • Width:  82 cm (32 inches)

  • Height:  36 cm (14 inches)

  • Weight:  8 kg (18 lb)