[W8BH] attended a talk by another ham, [W8TEE] that showed a microcontroller sending and receiving Morse code. He decided to build his own, and documented his results in an 8 part tutorial. He&#821… ...

For the audible component of the Morse challenge, an 8-ohm speaker is driven right off a pin on the Arduino. We won’t claim this efficient design only took one second to put together, but it ...

Morse Code is a system that uses dots, dashes and spaces to communicate letters and numbers. It was first created during the 1830s by Samuel F.B. Morse but was later improved in 1851 to create the ...