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 ...

Posted in Radio Hacks Tagged Alexanderson Transmitter, ham radio, morse code, very low frequency, vlf Blink Thrice To Let Me In April 8, 2015 by James Hobson 52 Comments ...

LaunchPad dev boards from Texas Instruments are cheap and easy to program, making them a great Arduino alternative if you can do without some of the bells and whistles. [ech0s] put his to good use … ...

A transmitter controller is (you guessed it) what controls the transmitters: Turning them off-and-on at the right times and having them send specific Morse code signal patterns. Arducon does all ...