This is a device built to showcase how fiber optics works due to total internal reflection that I made for a science project in grade 10. It is assembled without any tools and can be used for educational purposes. Also can be used in conjunction with an Arduino and a photo-resistor to detect when light reaches the other side. I used this to demonstrate a Morse code decoder, using flashes of light as dots and dashes. Uses 2 AA batteries with LED and resistor as well as a push button. All of it fits inside the box, with optical fibers threaded through the long tube to the Arduino and photo-resistor setup. It is a great model for teaching optics!

The full source code that ran on the Arduino is available on my GitHub (linked below).

GitHub: [https://github.com/ShyavanS/Arduino_Morse_Code_Translator](https://github.com/ShyavanS/Arduino_Morse_Code_Translator)

This was entered for the Lights competition as it involved the use of an LED to transmit signals through fiber optics.

This model was created using Fusion 360.