Do it yourself: desktop robot for stirring

The beauty of this toy - in the approach. A miniature copy of an industrial robot should not just be attached to the tabletop, but first be assembled from a variety of parts. And then have fun, good opportunity allows: the hand has five degrees of freedom.

Base rotation - 270 degrees
Elbow movement - 180 degrees
Elbow rotation - 300 degrees
Wrist rotation - 120 degrees
Fingers - squeeze / unclench
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Robot for sale here for $ 50 It is powered by four type D batteries (enough for 2 hours), and is controlled by a wired remote. The maximum weight with which a toy can work is 100 grams, while the grip is beautifully highlighted by LEDs. Not much, but enough to hold a teaspoon. Interestingly, by the way, how long will it take to learn from the scratch how to stir the sugar without splashing?