Lightculator

Light-based multiplication calculator.

0. Choose a number.
1. Align the rods to spell the number you chose. (For instance 245)
2. Move the number to the edge of the table, and use your phone's flashlight to light the top slot of the rightmost digit. You should always shed light only on the top slot of the rod.
3. As a result, some digits are lit. This should be the multiplication result of the number you choose at the beginning and the multiplication factor of the rods.

**I uploaded only the "x3" model, which means that it can only multiply by 3.**

*However*, this is the OpenSCAD code used to generate the models: https://github.com/arifr1234/lightculator
You can use it to generate a lightculator with a multiplication factor of your choice.

You can even generate longer rods that are able to multiply by multiple factors, similar to the original 19th-century [Genaille's rods](https://en.wikipedia.org/wiki/Genaille%E2%80%93Lucas_rulers) this model is based upon.

Video ex