Digital Orrery

thingiverse

# Digital Orrery This is a project to create a digital [orrery][orrery], each planet can be addressed and controlled individually. ## Parts list * 4x Nema 17 stepper motors, 40mm: https://www.amazon.com/gp/product/B00PNEQI7W * An Arduino Uno * Arduino CNC shield: https://www.amazon.com/gp/product/B06XJKVLG3 * All of the 3D printed parts ## Printing All the parts will need to be rotated because Fusion 360 likes to output STL files in the wrong orientation. I printed all parts at 0.32mm and they work pretty well, so I don't think a finer resolution is required. However, it would probably be wise to sand anything that slides around, mainly the inside and outside of the shafts. Print one of ever part, and 3 of the sun pins. For the collars, drill a hole into them around the middle of the protrusion for whatever wire you are using to hold the planets. The collars should snap firmly onto the shafts, I did not use glue. ## Demonstration Whole device: ![Whole device][wide] Close up: ![Closer device][close] Video: [](http://www.youtube.com/watch?v=tbyMe05wM1g "Orrery Working") More info found [here][github] [github]: https://github.com/jrddupont/Orrery [wide]: https://i.imgur.com/hOvwWhX.jpg [close]: https://i.imgur.com/2LTnKSo.jpg [orrery]: https://en.wikipedia.org/wiki/Orrery