SENSOR MODULE – ****OG HALL MAGNETIC

his module is a magnetic switch. If no magnetic field is present, the signal line of the sensor is HIGH (3.5 V). If a magnetic field is presented to the sensor, the signal line goes LOW, at the same time the LED on the sensor lights up. The polarity of the magnetic field is of influence to the switching action. The front side of the sensor needs the opposite polarity as the back of the sensor to switch on.
Connections:
Pin – = GND, connect to GND of the Arduino
Pin (middle pin) +5 v, connect to Arduino +5
Pin S signal, connect to Arduino pin 10
Power consumption, 3 mA in rest, 8 mA when switched on

Sample Code:

Use the LED of digital 13, and connect the Hall magnetic field sensor to digital pin 3,
and when there is magnetic shield present, the LED will turn on, otherwise, it will
turn off.
int Led=13;
int SENSOR=3;
int val;
void setup()
{
pinMode(Led,OUTPUT);
pinMode SENSOR,INPUT);
}
void loop()
{
val=digitalRead(SENSOR);
if(val==HIGH)
{
digitalWrite(Led, HIGH);
}
Else
{
digitalWrite(Led, LOW);
}
}