This project is a toy for those interested in learning how morse code works. It has an led that blinks following the morse code protocol and a display that shows which character is currently being transmitted. The objective is to decode the phrase being transmitted (ideally not looking at the display).
This project uses a discontinued esp32-s3 based development board, a blue led and a lcd display of 2 rows and 16 columns with an i2c backpack. I wired two of the mounting screws of the display to unused gpios of the microcontroller so that they can be used as buttons, by configuring them as capacitive inputs.
I programmed this project in circuitpython.
The code is pretty simple, in the codeled file is a class that contains a dictionary that matches each letter with it's respective morse code representation. Then it has a function called tx which can be passed two parameters, a string that contains the message to transmit and a reference time which is the dot representation time (all other times are multiples of this one).
Then on the code.py file the main function picks a phrase from the txt file, and starts reproducing it. The phrase then can be showed, and the game restarted using the buttons.
Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.