Coin Eating Robot

Ages 9-16+

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Starting at $19.95 with free shipping when you subscribe Learn more »


Save up in style — and explore engineering! — with a coin-eating robot you built yourself. Construct the body, connect the motor and cams, and wire up a circuit that becomes complete when you place a coin on the robot's tray — causing the robot to gobble the coin right up! Read all about the science of circuits, switches, and other electromechanical marvels like your money-munching bot!

Includes a step-by-step video tutorial link, illustrated blueprint instructions for this project kit, all the materials, and a special-edition Tinker Zine magazine for more fun!


  • Build the body
  • Add the head
  • Build the arms
  • Attach the arms


  • Switches and Circuits
  • Electromechanical Marvels
  • Cams and Mechanics

Using charter school funds?

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1 review

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  1. r r r r r

    Jessica T, Mar 27, 2020

    Amazingly cute and it works!

    I bought the Koala Crates for my kid but I myself bought this Tinker Crate of Coin Eating Robot! It is ULTRA CUTE and it does work! Amazing design and packaging. Love the extra magazine so educating! Can’t wait to get more of these crates!!

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