Silent Desk Clock

This is a completely silent motorized desk clock using an Arduino Nano and a CNC Shield V4 with a TMC2208 and a stepper motor. The gears are exposed and the sweep second provides a great look. The overall size of 9.5" (240mm) high by 9.1" (230mm) wide with a 6.15" (156mm) dial. A precision real time clock serves as a reference timer with an accuracy of about a minute per year.  A video of the clock in action can be found at https://youtu.be/UFyCKlxqVp0 An updated driver circuit was uploaded in J