This device is a rangefinder capable of accurately measuring distances up to 400 cm and displaying the reading in real time. This is accomplished through the use of an ultrasonic ranging module which measures the down and back time between high frequency pulses to determine the distance to the nearest solid object. That information is interpreted by the Arduino and then shown on a liquid crystal display in standard units. The main challenge for this project was getting the sensor to interface between the Arduino to the display, as this could not be accomplished using preexisting libraries. For this I needed to examine the datasheet of the display to understand how it worked on a fundamental level.