ABSTRACT: The IoT-Based Surveillance Robot is developed to provide safe and efficient monitoring in hazardous environments such as war fields, industrial areas, and public places. The main objective of this project is to reduce human risk by replacing direct human involvement with a remotely operated robotic system. The robot is controlled through an Android smartphone using Internet of Things (IoT) technology, allowing the user to operate it from a safe distance. The proposed system uses an ESP32-CAM module to capture and transmit live video through a web browser. This enables real-time surveillance of the surroundings and helps the user monitor the movement of the robot continuously. To improve navigation and safety, an ultrasonic sensor is used to detect obstacles in front of the robot. Whenever an obstacle is detected, the robot stops automatically to prevent collisions. A metal detector sensor is also integrated into the robot to identify metallic objects such as hidden bombs, weapons, or explosive materials. When a metallic object is detected, the system immediately activates a buzzer alert to warn the user. The entire system is controlled by an Arduino UNO microcontroller, which coordinates all sensors, motors, and communication modules. Thus, the project provides a low-cost, reliable, and efficient solution for surveillance and safety applications.

Keywords: IoT, Surveillance Robot, ESP32-CAM, Arduino UNO, Ultrasonic Sensor, Metal Detector Sensor, Obstacle Detection, Live Video Streaming, Remote Monitoring, Hazardous Environment.

Downloads: | DOI: 10.17148/IARJSET.2026.13471