Arduino Hall Sensor

With linear magnetic Hall sensors, you can accurately measure position, velocity, and current while enjoying the advantages of their compact design. Looking for a digital output? Our Comparator Hall sensors integrate a comparison circuit for fast response time and high accuracy.

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Linear magnetic Hall sensor is a device used to measure magnetic fields. The way it works is the Hall effect, that is, when the current carrier is placed in the magnetic field of the current junction, a voltage difference called Hall voltage will be produced by the conductor.

Linear Magnetic Hall Sensor is designed to provide linear output power equal to the strength of the magnetic field. They usually consist of thin semiconductor strips made of gallium arsenide (GaAs) or indium arsenide (InAs), with contacts between the two days to allow current to flow. When the magnetic field is applied perpendicular to the strip, the Hall voltage is detected and measured.
These sensors are used in a variety of applications, including position and velocity measurement, current measurement, and proximity detection. They have the advantages of precision, low power consumption and high operating temperature. The response of these sensors allows for accurate measurement of various magnetic force fields.

Components required:

1. Arduino Uno
2. LCD (16X2)
3. 10K variable resistor
4. Linear Magnetic Hall sensor Module
5. 5V DC power supply

Comparator Hall sensor:

The Comparator Hall Sensor is a Hall sensor with a Comparator circuit in addition to a simple Hall Effect detection mechanism. The purpose of the comparator is to provide a digital output signal at a predetermined level.

In Analog Hall sensors, a Hall element senses a magnetic field and produces an equal amount of energy. This analog voltage is then compared to a reference voltage using a comparison circuit. If the analog voltage exceeds the reference voltage, the comparator's output goes high; otherwise it stays low.

The analog Hall sensor's digital output makes it suitable for applications that need to sense the presence or change of a magnetic field. It can be used in applications such as speed measurement in automotive systems, position recognition in mechanical systems, and proximity detection in electronic devices. Comparator Hall Sensor has the advantages of fast response time, high accuracy and immunity to environmental noise. They are also easy to integrate into electronic circuits, making them a popular choice in many applications.

Circuit diagram:

Code: 

#include 
LiquidCrystal lcd(2,3,4,5,6,7);
#define B 9// Buzzer Pin
#define S 8// Hall Sensor Pin
void setup() {
  lcd.begin(16,2);
  lcd.setCursor(0,0);
  lcd.print("ROBOTSHAPERS");
  lcd.setCursor(0,1);
  lcd.print("HALL SENSOR");
  delay(1500);
  lcd.clear();
pinMode(B,OUTPUT);
pinMode(S,INPUT);
}
void loop() 
{
if(digitalRead(S) == LOW)
{
  lcd.setCursor(0,1);
  lcd.print("Mag. field Det.");
  digitalWrite(B,HIGH);
  delay(500);
  lcd.setCursor(0,1);
  lcd.print("Mag. field Det.");
  digitalWrite(B,LOW);
  delay(500);
}
if(digitalRead(S) == HIGH)
{
  lcd.setCursor(0,1);
  lcd.print("    CHECKING   ");
  digitalWrite(B,LOW);
}
}

Applications:

1. In automotive systems, Hall sensors are used in antilock braking system (ABS) and electric power steering (EPS).
2. In consumer electronics, Hall sensors work by detecting the presence of a magnetic field in devices such as smartphones and tablets and can turn the display on or off.
3. They are used for speed and position detection on computer hard drives and for finding documents in printers.
4. Hall sensors play an important role in industrial automation by providing accurate feedback for motor control and monitoring the position of rotating machinery
5. They are also used in proximity switches, security systems, and electronic devices. 

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