SPIRO

An ancient mathematical toy

ekaggrat singh kalsi

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Description

I has seen this 60's era toy and decided to build a clone of it. It is a very simple spirograph. The paper is held in place and rotates in place while two configurable arms draw the patterns. The entire device is run by a single geared DC motor.

Details

The device consists of a main base to mount the paper using a magnetic ring. Then the arm is adjusted by putting it in any pair of holes and the other adjustment is the position of the gear. The pen is mounted in the center hole.