Morse Code Text Generator

Arduino-based Morse code input device with LCD display.

Hardware Required

• Arduino Uno
• 16x2 LCD Display
• 10kΩ Potentiometer (contrast)
• 2 Push Buttons
• Breadboard & jumper wires

Wiring

LCD to Arduino

VSS → GND    |  RS → Pin 12   |  D4 → Pin 5
VDD → 5V     |  EN → Pin 11   |  D5 → Pin 4
V0 → Pot     |                |  D6 → Pin 3
                              |  D7 → Pin 2

Buttons to Arduino

Morse Input Button: Pin 7 → Button → GND
Display Button:     Pin 8 → Button → GND

Potentiometer

Pin 1 → 5V
Pin 2 (center) → LCD V0
Pin 3 → GND

Setup

Arduino IDE: Upload the provided code PlatformIO: Add to platformio.ini:

lib_deps = arduino-libraries/LiquidCrystal@^1.0.7

Usage

1. Input Morse: Press button short (dot) or long (dash)
2. Complete letter: Wait 1 second after last input
3. Display text: Press display button

Timing

• Dot: < 200ms press
• Dash: 200-600ms press
• Letter gap: 1 second pause

Common Letters

A: .-    E: .     H: ....   L: .-..   O: ---

Troubleshooting

• Blank LCD: Adjust potentiometer contrast
• No response: Check button wiring to GND
• Debug: Open Serial Monitor (9600 baud)

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Short press = dot, long press = dash, wait to complete letters