How to Build a Morse Code Transmitter Light with Raspberry Pi

I recently moved into a new place, and discovered that my friend and I live in buildings that face each other. We’re about a kilometer apart, but both our balconies have line of sight to each other. I’ve always wanted to build a communications network with my friends since I was a kid, so I dusted off an old book about Morse, one of my Raspberry P’s and got to work. I’m a big fan of mixing old and new technologies, so instead of using something modern, I decided to use Morse code.

This tutorial is the first in a two part series for building a building-to-building morse code communications system. In it, we’ll explore how to create a morse code transmitter using a Raspberry Pi and a DJ light.

What You’ll Need For This Project

  • Raspberry Pi 4 or Raspberry Pi 3 with power adapter
  • Enttec Open DMX USB Adapter
  • DMX Capable RGB DJ Light
  • 5-pin male to 3-pin female DMX cable
  • 8 GB (or larger) microSD card
  • Monitor with HDMI and power cables. (Optional)

How to Build a Morse Code Transmitter with a Raspberry Pi