Using Arduino Uno to Measure Changes in Potential Across a Potentiometer Wire with an Ultrasonic Sensor

Abstract

This experiment measures the fall of potential across a potentiometer wire, using an ultrasonic sensor and Arduino Uno. Arduino is an open-source electronics platform based on easy-to-use hardware and software. This experiment demonstrates the use of reflection of sound from a barrier to measure length of a potentiometer wire and of Arduino to measure potential at different positions of wire. This is a low-cost, effective method to evaluate students’ performance on the basis of task-based assignments. It also enhances their skills in determining various parameters through non- conventional techniques by the applying basic concepts of physics. This paper emphasizes the importance of using technology in conducting physics practicals through e-learning.