This document describes the design and implementation of a short range radar system using an Arduino Uno. The system uses an ultrasonic sensor mounted on a servo motor to detect objects within 180 degrees and up to 250cm. The Arduino transmits pulse signals to the ultrasonic sensor and calculates distance based on the echo return time. Distances are sent to MATLAB via UART communication and displayed graphically. The system is able to continuously monitor and detect obstacles in a short range area.