This is a simple version of a Spirograph. Click and drag to set an outer circle, an inner circle and a point, and the Spirograph will start drawing. Use the slider in the upper left to control the speed, and the play/pause button in the upper right to pause and resume at any point. For super fast drawing, shift-click on the green flag to turn on turbo mode.
This project doesn't use any trigonometry function blocks. Instead, it uses the "point in direction ..." and "move ... steps" blocks, letting Scratch take care of the trigonometry. This is to keep things simple and focused on the Spirograph mechanics rather than math. What is a Spirograph? Read this: https://en.wikipedia.org/wiki/Spirograph If you liked this, you'll love @alphabetica's very polished and much more advanced Spirograph Designer: https://scratch.mit.edu/projects/202510579
