Show HN: Tokidoki, a Multifunctional Robotic Timepiece

TOKIDOKI is a multifunctional robotic timepiece with a single-motor interface. Though its outward appearance resembles a simple analog clock or egg timer, the device features several modes: clock, timer, stopwatch, and alarm. In its idle clock mode, the analog face displays the time with concentric rings of RGBW LEDs. Timer, stopwatch, and alarm modes are accessible by “winding” the motor through the center dial. Like a mechanical egg timer, winding the dial clockwise begins a countdown timer. Each successive revolution represents an increased timescale, beginning at seconds and increasing through minutes, hours, days, weeks, months, and years until the final revolution represents the user’s total life expectancy. Winding the dial counterclockwise less than one full revolution begins a stopwatch. Winding counterclockwise between one and two revolutions sets an AM alarm; similarly, between two and three revolutions sets a PM alarm. Beyond its utility, this project is an exploration into minimum-viable interfaces for simple robotic devices.