This is my 1st project, the Morse Code key connect with computer via USB
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Step 1: Beginning
Prepared a computer mouse and open the case, remove the circuit board from mouse.
Step 2: Cover the LED
Use paper and tape to cover the LED on the circuit board to block the light signal transmitt to control IC.
Step 3: Soldering
Remove the left click mirco switch on the board by solder. And replace with two wires. You should soldering the wires to the "No" position of the board. After that, the other end of wires connect with the Morse Code key. (no polarity)
Step 4: Using With Computer
Connect the circuit board with computer via USB. Then you can use your own software or website to practice Morse Code transmission. I use this website for demonstration: http://boyslife.org/games/online-games/575/morse-code-machine/