Project32.Linear Magnetic Hall Module
======================================

Description
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The KY-024 Linear magnetic Hall sensor reacts in the presence of a magnetic field. 
It has a potentiometer to adjust the sensitivity of the sensor and it provides both 
analog and digital outputs.

The digital output acts as a switch that will turn on/off when a magnet is near, 
similar to the KY-003. On the other hand, the analog output can measure the 
polarity and relative strength of the magnetic field.

Compatible with popular electronics platforms like Arduino, Raspberry Pi, 
Esp32, Teensy and others.

Specification
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- Operating Voltage	2.7V to 6.5V
- Sensitivity	1.0 mV/G min., 1.4 mV/G typ., 1.75 mV/G max.
- Board Dimensions	1.5cm x 3.6cm

Connect
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.. image:: /img/connect/32_bb.png

Code
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.. code-block:: c

    int led = 13 ; // LED on arduino
    int digitalPin = 3; // linear Hall magnetic sensor digital interface
    int analogPin = A0; // linear Hall magnetic sensor analog interface
    int digitalVal ; // digital readings
    int analogVal; // analog readings

    void setup ()
    {
    pinMode (led, OUTPUT); 
    pinMode (digitalPin, INPUT); 
    //pinMode(analogPin, INPUT); 
    Serial.begin(9600);
    }

    void loop ()
    {
    // Read the digital interface
    digitalVal = digitalRead(digitalPin) ; 
    if (digitalVal == HIGH) // When magnetic field is present, Arduino LED is on
    {
        digitalWrite (led, HIGH);
    }
    else
    {
        digitalWrite (led, LOW);
    }
    
    // Read the analog interface
    analogVal = analogRead(analogPin);
    Serial.println(analogVal); // print analog value

    delay(100);
    }


Phenomenon
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.. image:: /img/phenomenon/32.jpg