Hopper.
cults3d
https://youtu.be/JVWtLrmafSk Hopper is a mechanism that hops when compressed and released. With two springs working together and a "mass" consisting of a motor, holder, switch, battery, gears, axle, and cams, the mechanism first compresses the springs before releasing them to propel the mass upward to an instant stop, causing Hopper to jump. Inspired by old-fashioned windup toys from my childhood, this mechanism also serves as a simple lesson in physics. Created using Autodesk Fusion 360 design software, sliced with Cura 4.3.0, and printed in PLA on both an Ultimaker 3 Extended and an Ultimaker S5.
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