Introduction: USB Arduino Morse Code Key
Ever wanted to type on a computer with a morse code key or to learn/teach morse code? You are on the right page!
For my other projects, check out calvinliang.me
Step 1: Gather Materials
• 1 × Arduino/Genuino Micro
• 1 × 3v buzzer
• 1 × morse code key (I got this one: http://www.ebay.com/itm/Morse-code-straight-key-Made-in-Taiwan-/161178779257?hash=item258700fe79:g:aqEAAOxygPtSs5kk)
• 1 × 680Ω resistor
• 1 × 120Ω resistor
• 1 × circuit board
• 4 × M4×0.50 round head machine screws
• 2 × 6-32×1/2" round head machine screws
• 2 × 6-32 machine nuts
• Some mounting tape
• Some jumper wires
• You might also want to learn morse code if you don't already know
Step 2: Code
Upload the code to the Arduino/Genuino Micro
The Keyboard library allows the Arduino/Genuino Micro to act as a keyboard
In my code seven and eight dot("......." & "........") are backspace and a really long dash("-") is space
Step 3: Solder
Solder all the parts onto a perfboard.
I started the project knowing very little about Arduino. I used an analog pin to detect if the morse code key is clicked. You can use any analog or digital pin for this, just be sure to change the "morseKeyInputPin" in the code. If you know what you are doing, you can use the internal pullup(INPUT_PULLUP) resistor to detect the state of the morse code key.
Step 4: 3D Print the Base
Step 5: Assemble
1. Wire the two wires sticking out of the circuit board under the morse code key
2. Secure the morse code key onto the base with two 6-32×1/2" round head machine screws and 6-32 machine nuts
3. Tape the circuit board on to the bottom cover with mounting tape
4. Secure the bottom cover with the four M4×0.50 round head machine screws
5. Adjust the bottom screws/bolts to level the morse code key
Step 6: Start Typing
Here's a US navy training video on sending morse code
Plug it into your computer and start typing
Don't forget, in my code seven and eight dot("......." & "........") are backspace and a really long dash("-") is space
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