How Do You Use Hall Effect Sensors?
Developed in the 1950s and 1960s, modern Hall Effect sensors are a convenient, economical way to detect position in mechanical systems. The effect, first discovered by Edwin Hall in 1879, produces a voltage in a material proportional to the strength of a nearby magnetic field. Using it, you can determine the position of a magnet by the voltage you get from the Hall Effect device. Combining them with microcontrollers has led to uses in many areas, from toys, to cars, to industrial machines. Mark a location on an object you want to sense. The magnet will be mounted here. Example: To sense a door closing, make a mark near the door’s edge. Attach the Hall Effect sensor to a stationary object so that the magnet will pass within a few millimeters of the sensor. Example: Attach the sensor to the door frame near the mark you made in step 1. Align and mount the magnet where you marked in step 1. Point the magnet so one of its poles is toward the sensor. Wire the power source to the sensor. It s
