Grove - Hall Sensor

Hall-effect sensor is acknowledged as the world's top 3 sensor products that are widely used in industry (automobile industry, computers, mobile phones, and emerging consumer electronics). They are also a popular sensor choice for electronics designers because of their non-contact, wear-free operation, low maintenance, and immunity to vibration, dust, and water. Have you ever wondered why the phone screen automatically lights up or turns off when you flip open or close your cover? It is because the magnet on the cover causes a physical output of a change in the magnetic field across the crystal, and the hall sensor present inside your phone senses it! The Hall sensor is based on the Hall Effect, which is the production of a voltage difference across an electrical conductor, transverse to an electric current in the conductor and a magnetic field perpendicular to the current.