Building a Voltage Monitor and Line Grapher

INTRODUCTION

This is a project that leverages the precision of a power meter to detect voltage levels in a circuit, and transform these readings into vivid, understandable line graphs. By adjusting the resistance of a sliding rheostat, not only can we observe real-time changes in the brightness of a light bulb, but the voltage values are also displayed instantaneously on the screen. This initiative not only showcases the interplay of technology and physics but also serves as an invaluable tool for students delving into the realm of electrical engineering and physics. By visualizing electrical data, students can grasp abstract concepts more intuitively, fostering a deeper understanding of voltage behavior in circuits.

HARDWARE CONNECTION

Please follow the diagram to connect all the materials.

KEY INFORMATION

Here is a circuit that you can refer.

Here is an instruction that you can follow to calibrate your Wattmeter, which will help you obtain more specific data.

Visit the following link to get more information:

Gravity: I2C Digital Wattmeter

Please do not keep the circuit powered on for too long, as it may cause the sliding rheostat to become hot. Once the experiment is successful, promptly disconnect the power supply.