2C1 Counting Sensor Module KY-024

Description:

The KY-024 Linear Magnetic Hall Sensor responds when a magnetic field is present, It features a potentiometer to modify the sensor's sensitivity and offers both analog and digital outputs. Similar to the KY-003, the digital output functions as a switch that is activated or deactivated by the presence of a magnet. The polarity and relative strength of the magnetic field can be measured using the analog output, the SS49E hall-effect sensor, on which the KY-024 module is based, allows an operating voltage range of 2.7V to 6.5V. The ESP8266 and ESP32 microcontrollers, both of which operate at 3.3V, as well as our Arduino microcontroller, which operates at 5V, are ideal for this voltage range. Because the KY-024 module measures the analog signal and generates a digital signal as well, it is bigger than some other hall-effect modules. As a result, the module includes additional parts like the LM393 dual comparator and a 100k potentiometer.

Datasheet

Features:

• This Module includes Digital and Analog output
• Responds to Either Positive or Negative Gauss
• Linear Output for circuit design flexibility
• compatible with Arduino Raspberry Pi And ESP32
• Stable and Accurate Output 

Package Includes:

• 1x Hall Effect Magnetic Sensor Module KY-024

Pinout



PROJECT - ARDUINO AMBIENT THERMOMETER

After learning about the KY-024 module and the hall-effect sensor, it is now time to build a project using the module.

Our project will get the analog and digital signals from the KY-024 module, display it on the serial monitor and control the Arduino’s built-in LED.

COMPONENTS

For this project, we need the following components:

• Arduino Uno board (1 pc.)
• KY-024 Linear Magnetic Hall Sensor (1 pc.)
• Jumper wires

WIRING DIAGRAM

COMPONENT PIN	ARDUINO UNO PIN
A0	A0
G	Ground
(+)	+5V
D0	8

THE CODE

Below is the Arduino sketch for our project. I have added comments to explain important parts of the code. Save the code as KY-024.ino and upload it to your Arduino board.

// Arduino and KY-024 module
void setup ()
{
  pinMode (13, OUTPUT); // built-in LED pin set to output
  pinMode (8, INPUT);   // module digital output connected to Arduino pin 8
  Serial.begin(9600);   // initialize serial
}
void loop ()
{
  Serial.print("Analog pin: "); // display analog and digital values to serial
  Serial.print(analogRead(A0));
  Serial.print(" | Digital pin: ");
  if (digitalRead(8) == HIGH) {
    Serial.println("High");
    digitalWrite (13, HIGH); // if magnetic field is higher than threshold , switch-On built-in LED
  }
  else {
    Serial.println("Low");
    digitalWrite (13, LOW);
  }
  delay(100); // wait 100 milliSeconds
}

PROJECT TEST

Apply power to your Arduino Uno board and open the Serial Monitor in the Arduino IDE.

Arduino will output the analog value sent by the module to the serial monitor.

If the value reaches the threshold setpoint set by VR1, the built-in LED of the Arduino will also light-up.

Adjust the threshold by turning VR1.