Initially we build a transmitter and receiver to communicate between Arduinos using Morse code sent by pulses of light waves. Next, we consider digital music, which we create by switching a voltage on ...

The first message sent by Morse code's dots and dashes across a long distance traveled from Washington, D.C., to Baltimore on Friday, May 24.

What’s more, the Arduino-powered device’s small LCD screen also displays translations at speeds as fast as 60 words-per-minute—quicker than even some professional-level human Morse code ...

Morse code was once a staple of the communications industry, but with advancing technology it has become relegated almost exclusively to movies and a niche group of ham radio operators.

The Morse key is a switch that connects and disconnects the 12V power to the rest of the circuit. It has a wooden knob on the top, which makes tapping out the Morse code easier.

The first message sent by Morse code’s dots and dashes across a long distance traveled from Washington, D.C., to Baltimore on Friday, May 24, 1844 – 175 years ago. It signaled the first time ...

The technology is old and Morse Code complicated, ... By his 20s, he had scrounged up an old radio receiver and “an old transmitter where you had to plug in a crystal,” he said.