PHASE I Through this project we tried to show the concept which is used in the designing of Radar. We developed a model which look like radar and which is capable of detecting the object which comes under its range. And for doing this task it uses ultrasonic sensors. Ultrasonic sensors generate high frequency sound waves and evaluate the echo which is received back by the sensor. Sensors calculate the time interval between sending the signal and receiving the echo to determine the distance to an object. . PHASE II The sensor is kept in motion continuously with the help of stepper motor. The stepper motor turns the ultrasonic range finder 360 degrees and back to prevent winding up the cables. After each step the range finder is activated and the distance is measured .When two measurements have been made, the data or the signals were sent to the microcontroller which is already programmed. Microcontroller takes the signals as an input signals and the execution is done.