Rubber-Ducky

A simple rubber ducky program using arduino leonardo

Arduino Leonardo Rubber Ducky Script Interpreter

A simple Rubber Ducky DuckyScript interpreter for Arduino Leonardo.
Write your DuckyScript in C array, upload to your Leonardo, and plug it into any computer to automatically execute keyboard commands (HID)!

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Features

• Write DuckyScript as const char* script[] directly in code
• Supports DELAY, STRING, ENTER, TAB, GUI, CONTROL, SHIFT, ALT, arrow keys, function keys (F1~F12), and more
• No EEPROM/SD card required
• Plug and play (auto run on power up or reset)
• Easy to modify, fast to test

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Usage

1. Prepare Your Script

Edit the script array in your Arduino sketch.
Each array element is a line of DuckyScript.
Example:

const char* script[] = {
  "GUI r",
  "DELAY 500",
  "STRING cmd",
  "DELAY 200",
  "ENTER",
  "DELAY 700",
  "STRING start https://www.youtube.com/watch?v=dQw4w9WgXcQ",
  "ENTER"
};

2. Upload the Code

• Open the .ino file in Arduino IDE

• Select Board: Arduino Leonardo or other arduino that support HID.

• Plug your Leonardo into your computer via USB

• Click Upload

3. Test

• After upload, unplug and re-plug Leonardo into a Windows PC (or press the RESET button).

• The script will run automatically, emulating a keyboard and executing your commands.

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Supported DuckyScript Commands

• REM - Comment line (ignored)

• DELAY <ms> - Wait specified milliseconds (e.g. DELAY 500)

• STRING <text> - Type text string (e.g. STRING notepad)

• ENTER - Press Enter key

• TAB - Press Tab key

• GUI <key> - Press Windows key + key (e.g. GUI r)

• CONTROL <key> - Press Ctrl + key

• SHIFT <key> - Press Shift + key

• ALT <key> - Press Alt + key

• ESCAPE, CAPSLOCK, DELETE, BACKSPACE, MENU

• UP, DOWN, LEFT, RIGHT - Arrow keys

• F1 ~ F12 - Function keys