digital clock built with LEGO bricks
When it comes to time, the best companion is a clock; This time Twister 3 is an incredible digital watch designed with LEGO bricks.
Its operation is directed by 3 sections in blue and white colors; which rotate 360; very practical and versatile
Use a motor to indicate the time and another for the seconds, it is very easy, easy to use, and very fun.
http://tiltedtwister.com/timetwister3.html
Hunter: 
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