Mechanical Traffic Light
Description
This traffic light toy changes state through a manually rotated shutter. The design is intended to be used with translucent filament lenses and a single internal light source, but it could easily be adapted for multiple bulbs. <iframe width="640" height="360" src="https://www.youtube.com/embed/cYe64kF35ZY" frameborder="0" allowfullscreen="true">https://youtu.be/cYe64kF35ZY</iframe> https://youtu.be/cYe64kF35ZY
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