In this video I will show you how to build a Gauss Meter. To make this DIY gauss meter, I will use a hall effect sensor, 5 volt voltage regulator and an i2c lcd arduino screen to make this homemade gauss meter. This arduino gauss meter will be used to check the pickup magnet strength of a guitars pickup by measuring the pickups gauss. The 5 volt voltage regulator uses a 7805 ic to regulate 9 volts down to 5 volts by using a 5 volt voltage regulator circuit . The hall effect sensor uses the five volts as a metering voltage to test the strength of a magnet. Guitar pickup gauss measurements help to determine the strength of a pickup and give a measurable number when duplicating pickups. I hope this video shows you how to build a gauss meter for your pickup projects. Thanks for watching.