Control a relay with arduino and hall effect sensor.
Simple hall effect sensor circuit diagram.
Circuit diagram using hall effect sensor.
As you can see the hall effect sensor arduino circuit diagram is pretty simple.
Circuit diagram and explanation.
The hall effect sensor we will use in this circuit is an a1302 hall effect sensor manufactured by allegro.
When the magnetic flux density around the sensor exceeds a certain pre set threshold the sensor detects it and generates an output voltage called the hall voltage v h.
The simple circuit diagram can be seen below.
The output signal from a hall effect sensor is the function of magnetic field density around the device.
The hall effect sensor explained above can be quickly configured through a few external parts for converting magnetic field into electrical toggling pulses for controlling a load.
The working of this circuit is very simple.
The principle of hall voltage is used as a working principle of the hall effect sensor.
When a magnetic source comes in close proximity to the hes it supplies a negative trigger pulse to the timer.
A sensor can be used to trigger a timer for a specific duty.
Using this technique the hall sensor will be able to detect the presence of magnet around it.
A hall effect sensor is used to trigger a timer ic.
This little project can be used for variety of magnetic field detection purposes.
This is a project of a hall effect sensor switch circuit.
Techniques on how to increase the trigger sensitivity will be covered.
The complete circuit diagram for interfacing hall sensor with arduino can be found below.
With this circuit we will be able to detect when any mangets in proximity of our circuit.
Resistor r1 acts as a positive bias for the for the input at pin 2.
Hall effect sensor principles.
Consider the diagram below.
The circuit is very simple and using just four components that are a us1881 hall effect sensor switch 220 ohms resistor 2n4403 transistor and a relay switch.
Applications of hall.
On a thin strip of a conductor electrons flow in a straight line when electricity is applied.
When this charged conductor comes in contact with the magnetic field which is in a perpendicular direction to the motion of electrons the electrons get deflected.
Linear hall effect sensor can detect both magnet pole and you can make some fun project with it let s see how it works and circuit diagram in this video.
Enough of theory let s get into hardware.
This video will show you how to build simple hall effect circuits using linear hall effect switches.
