One Motor Lego Mindstorms EV3 Analog Clock

No assembly video this time. Model in Lego Digital Designer format (.lxf) and EV3 program can be downloaded from Rebrickable: https://rebrickable.com/mocs/MOC-28251

This clock has minute and hour hands and is driven by one motor. 1:12 gear ratio is provided by 3 gear pairs (two pairs 8 teeth to 16 teeth and one pair 12 to 36 teeth).
Both hands rotate around the same axis. To achieve that, a turntable (4652235/4652236) is used. The turntable has 28 teeth. I was not able to find any suitable gear to drive the turntable (e.g. if driven by 8-teeth gear, the ratio would be 1:3,5 which is not much usable for getting 1:12 ratio), so the turntable is driven by another such turntable.
To set the time use Motor Control function of Lego brick to move the hour hand so it points directly up. Then manually move minute hand so it also points directly up. Now use Motor Control again to set the time, you can manually turn the motor to set the time precisely. When time is set, launch the program.
You can make a paper/cardboard dial and attach it to the mechanism.

Видео One Motor Lego Mindstorms EV3 Analog Clock канала Filipp Sudanov