Project24.KY-003 Hall Sensor
==============================

Description
------------
The KY-003 Hall Magnetic Sensor module is a switch that reacts to the presence 
of a magnetic field, turning itself on or off. Compatible with popular microcont
rolers like Arduino, Raspberry Pi and ESP32.This module offers a digital output.


Specification
--------------
- Operating Voltage	4.5V to 24V
- Operating Temperature Range	-40°C to 85°C
- Board Dimensions	18.5mm x 15mm

Connect
--------
.. image:: /img/connect/24_bb.png

Code
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.. code-block:: c

    int led = 13;//LED pin
    int sensor = 3; //sensor pin
    int val; //numeric variable

    void setup()
    {
        pinMode(led, OUTPUT); //set LED pin as output
        pinMode(sensor, INPUT); //set sensor pin as input
    }

    void loop()
    {
        val = digitalRead(sensor); //Read the sensor
        if(val == LOW) //when magnetic field is detected, turn led on
        {
            digitalWrite(led, HIGH);
        }
        else
        {
            digitalWrite(led, LOW);
        }
    }


Phenomenon
-----------
.. image:: /img/phenomenon/24.jpg