This project implements a new defense mechanism which has a detecting and an aiming unit. The main objective is to help the armed forces to catch intruders. The targeting unit has a microcontroller along with sensors to detect the presence of humans in thetargeted area and processes various atmospheric parameters electronically.LASER pointer is used to determine if the desired target is hit or missed by tracking the path of the Laser and determining the point of intersection with the LASER. Once the parameters are obtained are obtained the targeting unit automatically positions the gun using its special mechanism.

Keywords : Sensors, Wireless sensor Network, Base Station, Target Tracking, Human Model, Monitoring.