LEGO Clock

LEGO analog clock built with EV3

Rock around the LEGO clock!

This is an old-fashioned analog LEGO clock with the minute and the hour hands. A single EV3 Medium motor drive the whole mechanism through a gear galore!

You can build this LEGO clock out of a singspeile LEGO MINDSTORMS Education EV3 set 45544, which includes a large variety of gears. This EV3 project allows you to use almost all of them together!
By building this analog LEGO clock, you will learn how to make gears mesh properly, and how to obtain precise gear ratios. The minute hand turns 12 times faster than the hour hand, thanks to a specially designed geartrain. This clock is designed to be programmed even with the simple Brick Program App.


This LEGO clock is ready to go! The .EV3 project file that comes with the commercial license includes a set of EV3 programs.
The quality of the building instructions is comparable to the LEGO official ones . The building steps are detailed and clear.
This LEGO clock can be built with the parts from LEGO MINDSTORMS Education EV3 core set 45544.
Each PDF comes stamped with your name and license, to ensure product authenticity

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  • Users
  • Building Instructions
  • Program Files
  • License Type
  • Commercial Use

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  • Printable high-quality PDF document
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In the act of buying, you accept the following terms:

  1. You cannot share, resell or redistribute the material in any way with third parties.
  2. You cannot use the material for other uses than the one allowed  by your license.
  3. The material comes encrypted and protected, and cannot be extracted or transformed.

Any infringment to the above terms is considered a punishable criminal offence.