{"id":25876034,"url":"https://github.com/onkar69483/home-security-system","last_synced_at":"2026-05-08T22:34:37.855Z","repository":{"id":222617460,"uuid":"757908037","full_name":"onkar69483/Home-Security-System","owner":"onkar69483","description":"Smart home security system built using a NodeMCU, an ultrasonic sensor (HC-SR04), an LED, and a buzzer. 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The system detects motion and alerts by lighting up the LED, sounding the buzzer, and sending notifications to Telegram.\n\n## Components\n\n- NodeMCU v1.0\n- HC-SR04 Ultrasonic Sensor\n- LED\n- Buzzer\n- Breadboard\n- Jumper wires\n\n## Circuit Diagram and Demonstration\n\n\u003cdiv style=\"display: flex; justify-content: center; align-items: center;\"\u003e\n  \u003cimg src=\"https://github.com/onkar69483/Home-Security-System/blob/main/circuit_diagram.jpg\" alt=\"Circuit Diagram\" width=\"45%\" style=\"margin-right: 2%;\" /\u003e\n  \u003ca href=\"https://youtu.be/_iyvJMkf_yY\" style=\"width: 40%;\"\u003e\n    \u003cimg src=\"https://img.youtube.com/vi/_iyvJMkf_yY/0.jpg\" alt=\"Home Security Bot Demonstration\" width=\"35%\" /\u003e\n  \u003c/a\u003e\n\u003c/div\u003e\n\n## How It Works\n\nThe HC-SR04 ultrasonic sensor measures the distance to an object. If an object comes within a certain distance, the NodeMCU triggers the LED and buzzer to alert the presence of an object or person, and sends a notification to a predefined Telegram channel.\n\n## Setup Instructions\n\n1. **Hardware Setup**\n    - Connect the components as shown in the circuit diagram.\n    - Ensure that all connections are secure and correct.\n\n2. **Software Setup**\n    - Install the Arduino IDE from [here](https://www.arduino.cc/en/Main/Software).\n    - Install the NodeMCU board in the Arduino IDE. Follow the instructions [here](https://arduino-esp8266.readthedocs.io/en/latest/installing.html).\n    - Connect the NodeMCU to your computer using a USB cable.\n    - Open the `homesecuritybot.ino` file in the Arduino IDE.\n    - Select the correct board and port from the Tools menu.\n    - Upload the code to the NodeMCU.\n\n## Usage\n\n- Power the NodeMCU with a USB cable or a 5V power source.\n- The ultrasonic sensor will continuously measure the distance.\n- If an object is detected within the specified range, the LED will light up, the buzzer will sound, and a notification will be sent to Telegram.\n\n## Troubleshooting\n\n- Ensure that the connections are secure and match the circuit diagram.\n- Check that the NodeMCU is correctly connected to the computer and that the correct port is selected in the Arduino IDE.\n- Make sure the ultrasonic sensor is functioning correctly.\n\n## Contributing\n\nIf you'd like to contribute to this project, please fork the repository and use a feature branch. Pull requests are welcome.\n\n## License\n\nThis project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fonkar69483%2Fhome-security-system","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fonkar69483%2Fhome-security-system","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fonkar69483%2Fhome-security-system/lists"}