Ancient Persian Optical Telegraph Funtype: Reimagined with Arduino
- Watch the Demo Video: YouTube
🔥 Project Overview

This project draws inspiration from a theory proposed by Dr. Hamid M. Mohsenian-Rad, who argues that during the reign of Darius the Great, ancient Persians may have used towers and colored fires—white and red—as an early optical telegraph to transmit coded messages, somewhat like Morse code or digital 0s and 1s.
Building on this idea, I developed a prototype using Arduino boards, LEDs, LDR sensors, a servo motor, and an ultrasonic sensor to send sequences of light pulses. These pulses encode data in binary (0s and 1s), which are then decoded as ASCII text, effectively demonstrating a simple text-based optical link inspired by this historical theory. The project invites reflection on the evolution of information technologies and the creative ways societies have approached long-distance communication.
📖 Reference
- Mohsenian-Rad, M. (2007). Iran dar Chahar Kahkeshan-e Ertebati [ایران در چهار کهکشان ارتباطی]. Tehran: Soroush Press.