This is clock project in the form of a freestanding cyclist were the time elements representing hours and minutes are via the wheels.
Two separate and identical elements are used which consist of a stepper motor driven gear that drives a larger gear that represents a bicycle wheel arranged such that the drive gear is below the surface.
The reference start (home), position for the wheels are verified by hall sensors and magnets.
All this is controlled by a Raspberry Pi Pico with RTC and LCD used for both time setting and display.
The specific LCD display was chosen due to its small size and integrated push buttons negating the requirement for separate buttons and it had been used on a previous project.
The LCD displays the time in 24 hour mode whilst the wheels display the time in 12 hour mode.
All this housed in an acrylic case.
Size: 207(H) x 218(L) x 118(D) mm
Weight: 1.33kg
Details
Full details and build instructions are avialable at the following: