Arduino Morse Code Trainer by Tom Lewis, N4TL
My article on this appeared in the September 2016 QST on page 39
There is a new version of the sketch that does not need a keyboard. Read the last
two pages of the "How to build a simplified code trainer" Document.
Version 2.1 of the sketch by Tom N4TL
No Keyboard Version by Mike Hughes, KC1DMR
Both versions operate the same. The no keyboard version is recommended.
Figure one, shows the original setup using a breadboard and jumper wires from the Arduino to the breadboard and LCD display
Figure two, shows the IO board before it was assembled.
Figure three, shows the Arduino with the IO board plugged into it sitting in a Lustroware 13 oz. food container.
Figure four, shows the Arduino, the IO board and the LCD display plugged into each other in the food container.