User Manual

11
Components
- 1 * SunFounder Uno board
- 1 * USB data cable
- 1 * Hall sensor module
- 1 * LCD1602
- 1 * Potentiometer
- Several jumper wires
Experimental Principles
Hall Effect
Hall Effect is a kind of electromagnetic effect. It was discovered by Edwin Hall in 1879 when
he was researching conductive mechanism about metals. The effect is seen when a
conductor is passed through a uniform magnetic field. The natural electron drift of the
charge carriers causes the magnetic field to apply a Lorentz force (the force exerted on a
charged particle in an electromagnetic field) to these charge carriers. The result is what is
seen as a charge separation, with a buildup of either positive or negative charges on the
bottom or on the top of the plate.
Hall Sensor
A hall sensor is a kind of magnetic field sensor based on the effect.
Electricity carried through a conductor will produce a magnetic field that varies with current,
and a Hall sensor can be used to measure the current without interrupting the circuit.
Typically, the sensor is integrated with a wound core or permanent magnet that surrounds
the conductor to be measured.
SunFounder