Geneva drive

A geneva drive is a way of moving things into different positions that looks like a very fancy machine dance! Imagine you have a circle with slots cut into it and little arms sticking out from the center of the circle. Now imagine you have another circle with teeth on it, kind of like gears, and it sits next to the other circle with the slots.

When you turn the circle with the teeth, they slide into the slots in the other circle, and this makes the little arms move into different positions. Those arms can be attached to all sorts of different things, like machines or toys, so that they move in different ways depending on how the teeth and slots interact.

Geneva drives are a really cool way to make complicated machines work smoothly and precisely, so that everything is in the right place at the right time. It's like choreographing a big dance, but with machines instead of people!