Zelda MasterSword

As a part of my CAD and Prototyping class, my final project involved designing and prototyping an electromechanical toy. My team chose to build a replica of the "MasterSword" from Zelda, releasing from its stone after completing a short memory game and pressing the button on its handle. The swords main mechanical components include a crankshaft to lock the blade, as well as detents controlled by pen-like clicking mechanism on the hilt. The toy won both the Innovation Award and the People's Choice Award at the engineering toy fair.

My main role on the team was to prototype the mechanical components, as well as program the memory game. Each mechanical component as well as the sword and rock were 3D printed, and the only electromechanical component was a small servo controlling the crankshaft. Small pegs and press fits were used to assemble the sword and rock. The memory game was programmed based off of a simple "Simon Says" game, where a user matches a 6-step sequence in order to unlock. An Arduino was used to control the memory game, as well as the crankshaft to unlock the sword.