This article presents a comprehensive framework for developing a cost-effective security system leveraging the ESP32-CAM module and a Passive Infrared (PIR) motion sensor. The system is designed to detect unauthorized motion and facilitate real-time video surveillance. Equipped with an OV2640 camera and integrated Wi-Fi capabilities, the ESP32-CAM enables efficient video streaming and remote monitoring via a mobile application or web interface. Upon detecting motion, the PIR sensor triggers the ESP32-CAM to transmit alerts and live video feeds, ensuring prompt user notification. The article elaborates on the system architecture, hardware components, software development within the Arduino IDE, and operational principles. Extensive testing under diverse environmental conditions validates the system’s reliability and performance. Additionally, the integration of IoT protocols, such as MQTT, is explored to enhance scalability and user interaction, making the system adaptable to modern security demands in resource-constrained settings.

ESP32-CAM, PIR motion sensor, security system

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