PIR-Sensor-&-Striplight

An Arduino-based automation project that uses a PIR motion sensor and a 5V LED strip light to create a simple motion-activated lighting system.
When motion is detected, the strip turns ON for 20 seconds and then turns OFF if no motion is detected.
The timer resets if continuous motion is detected.

✨ Features

• Automatic motion detection using PIR sensor
• LED strip turns ON for 20 seconds after motion
• Timer resets if new motion is detected
• Configurable delay time (default: 20s)
• Simple hardware setup (no relay or MOSFET required if strip is small)
• Works with active-low PIR modules

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🛠 Technologies Used

• Arduino Uno (or compatible board)
• PIR Motion Sensor (active-low type)
• 5V LED strip light (non-programmable)
• Arduino IDE (for code upload)
• C++ (Arduino language)

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🚀 Getting Started

Prerequisites

• Arduino IDE installed
• Arduino Uno board + USB cable
• PIR sensor and 5V LED strip

Installation

1. Clone this repository:

   git clone https://github.com/yourusername/PIR-Sensor-Striplight.git
   cd PIR-Sensor-Striplight

2. Open PIR_StripLight.ino in Arduino IDE
3. Connect Arduino Uno via USB
4. Upload the sketch

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💡 Usage

1. Power the Arduino board.
2. Wait for the PIR sensor to warm up (~30–60 seconds).
3. Walk in front of the PIR sensor.
4. The strip will turn ON for 20 seconds.
5. If more motion is detected, the timer resets.

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📂 Project Structure

PIR-Sensor-&-Striplight/
│
├── PIR_StripLight.ino     # Main Arduino code
├── README.md              # Documentation
└── wiring.png             # Wiring diagram (optional, add later)

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📦 Packaging for Distribution

• Source code is available in this repository.

• To share:

  • Provide the .ino file
  • Or zip the full project folder
  • Optionally include wiring diagram image for clarity

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🔮 Future Enhancements

• Add configurable delay time via potentiometer
• Use a relay or MOSFET to handle higher-power LED strips
• Add LDR sensor to only trigger at night
• Implement power-saving mode with Arduino sleep functions
• Add a buzzer or sound alert when motion is detected

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📝 Changelog

v1.0.0 (Initial Release)

• Basic PIR + LED strip integration
• Motion resets 20-second timer
• Active-low PIR support

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💻 System Requirements

• Arduino Uno (or any 5V-compatible Arduino board)
• PIR sensor (active-low type)
• 5V non-programmable LED strip (max power depends on Arduino 5V pin capability)
• Arduino IDE (v1.8+ or Arduino IDE 2.0)

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🛠 Troubleshooting

• Light always ON: Your PIR may be active-high. Invert the logic (val == HIGH instead of val == LOW).
• Light never turns ON: Check PIR warm-up time (30–60 seconds).
• Random triggering: Lower PIR sensitivity or shield from direct sunlight/heat sources.
• Arduino resets when strip turns on: Strip current draw may exceed Arduino’s 5V regulator. Use an external 5V supply with common ground.

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🙏 Acknowledgements

• Arduino Community
• Open-source contributors for PIR tutorials
• Inspiration from basic IoT motion-light projects
• TINKERCAD
• Nooby
• Firelink
• SBBC PC
• Rita's PC
• To my dog and cat

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📜 License

This project is licensed under the MIT License — free to use, modify, and distribute. See LICENSE for details.