Project22.KY-035 Hall Sensor

Description

This is a magnetic induction sensor. It can sense the magnetic materials within a detection range up to 3cm. The detection range and the strength of magnetic field are proportional. The output is digital on/off. This sensor uses the SFE Reed Switch - Magnetic Field Sensor.

Specification

Sensing magnetic materials
Detection range: up to 3cm
Output: digital on/off
Size: 30*20mm
Weight: 3g

Connect

_images/22_bb.png

Code

int ledPin = 13;                // choose the pin for the LED
int inputPin = 3;               // Connect sensor to input pin 3
int val = 0;                    // variable for reading the pin status

void setup() {
pinMode(ledPin, OUTPUT);      // declare LED as output
pinMode(inputPin, INPUT);     // declare push button as input
}

void loop(){
val = digitalRead(inputPin);  // read input value
if (val == HIGH) {            // check if the input is HIGH
    digitalWrite(ledPin, LOW);  // turn LED OFF
} else {
    digitalWrite(ledPin, HIGH); // turn LED ON
}
}

Phenomenon