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Want to make something bob up and down? Try experimenting with this motion module. What happens if you change the length of the rod?

Up and Down 1

The motor on this module turns the gears which make the rod bob up and down - and back and forth.
stuff you need

Use these parts...   ...for these steps.

See all Motion Modules

What else
See another way to make a module that bobs up and down.
Want to create a creature that moves? Here are some ways to make a simple animal.
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