🖱️ ATtiny85 USB Mouse Jiggler

Turn your Digispark ATTiny85 into a compact, plug-and-play USB Mouse Jiggler using the DigiMouse library. This tiny tool keeps your computer awake by simulating subtle mouse movements — perfect for long downloads, presentations, or unattended tasks.

🔧 Arduino Setup

• Additional Board URL
  Add this to your Arduino IDE:
  https://raw.githubusercontent.com/digistump/arduino-boards-index/master/package_digistump_index.json

• Board Reference Image
  

📦 Project Overview

The Digispark ATTiny85 is a low-cost microcontroller capable of emulating USB HID devices. In this project, it acts as a virtual mouse, gently moving the cursor in a square pattern — right, down, left, up — every few seconds.

These movements are:

• Minimal enough to avoid disrupting your workflow
• Effective enough to prevent screen lock or sleep mode

⚙️ Key Features

• ✅ No extra hardware required — runs entirely on ATTiny85
• ✅ USB HID mouse emulation via DigiMouse
• ✅ Configurable movement interval (default: every 2 seconds)
• ✅ Prevents sleep, lock, or screensaver activation
• ✅ Plug-and-play — just connect to any USB port

🧠 How It Works

• The DigiMouse library initializes a virtual USB mouse.
• The loop moves the cursor in a small square pattern.
• A delay ensures subtle, periodic movement to keep the system active.

📚 Required Library

#include <DigiMouse.h>

The DigiMouse library allows the ATTiny85 to simulate mouse movements and clicks as a USB HID device.

💡 Applications

• 🖥️ Prevent Screen Lock: Keeps your system awake during downloads or updates
• 🎤 Presentations: Ensures your screen stays active while presenting
• 🧪 Testing & Automation: Maintains activity during unattended operations
• 🛡️ Monitoring Systems: Prevents sleep on machines requiring constant uptime

🧪 Example Use Case

Upload the sketch to your Digispark ATTiny85, plug it into your PC or laptop, and let it run. Your system will stay awake — no more manual mouse wiggles!

⚠️ Notes

• Compatible with Windows, macOS, and Linux systems that support USB HID devices
• You can customize movement intervals and directions in the code to suit your needs

✅ Conclusion

With just a few lines of code and a Digispark ATTiny85, you can build a reliable USB Mouse Jiggler that keeps your system active — hands-free. It’s compact, affordable, and incredibly useful for anyone needing uninterrupted uptime.