A hardware-based utility designed to simulate mouse movement, clicking, and keyboard activity to prevent system idle states, screen locks, and "Away" status on communication platforms.

This project transforms a standard Arduino Uno R3 into a plug-and-play USB Human Interface Device (HID). By flashing the onboard ATmega16U2 chip with custom firmware, the Arduino can send raw HID reports to a host computer to mimic a physical mouse and keyboard.

The "Chaotic Jiggler" mode performs a safe horizontal jitter while intermittently clicking and typing random characters to simulate active user engagement without disrupting the cursor's vertical position.

• [cite_start]Hardware: Arduino Uno R3 (Atmega16U2 version)[cite: 59].
• Firmware: Arduino-mouse-0.1.hex (Mouse only) or HoodLoader2 (Composite Mouse/Keyboard).
• Software: Arduino IDE 1.8.19 and Atmel FLIP.

• Operating System: Windows (for Atmel FLIP support).
• Hardware: Arduino Uno R3 and a USB 2.0 Cable.
• Software: Atmel FLIP tool installed.

1. Open the Arduino IDE 1.8.19.
2. Upload the Chaotic_Jiggler.ino sketch. This combines horizontal jitter, randomized left-clicks, and random character typing.
3. Ensure you have selected Tools > Board > Arduino Uno and the correct COM port.

1. Locate the 6-pin ICSP header near the USB port.
2. Briefly short the two pins closest to the USB reset button.
3. Verify the device appears as "ATmega16U2" in Device Manager.

1. Open FLIP, select ATmega16U2, and open the USB connection.
2. [cite_start]Note: To support both typing and moving, you must use HoodLoader2 or a composite HID firmware[cite: 39, 59].
3. Load your .hex file, ensure Erase, Program, and Verify are selected, and click Run.
4. Replug the device to begin emulation.

This version is designed for safety and activity persistence:

• [cite_start]Horizontal Jitter: The mouse moves 5 pixels right and 5 pixels left, returning to the exact starting point to prevent "drifting" onto unwanted buttons [cite: 5, 20-21].
• Random Clicking: Simulates a standard Left Click to maintain application focus.
• Random Typing: Generates 8-character strings of random alphanumeric text to bypass basic activity monitors.
• Safe Boundaries: Restricted to X-axis movement to ensure the device does not click on the Taskbar or Close buttons.

• [cite_start]Implementation of composite HID devices (Mouse + Keyboard)[cite: 39, 217].
• Using randomSeed() with an unconnected analog pin to generate unpredictable behavior.
• Managing non-disruptive automated input to maintain system uptime.

• Atmel FLIP Tool Download
• HoodLoader2 Installation Guide