Arduino KY-024 Linear Magnetic Hall Module

OVERVIEW:

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 analogue 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 analogue output can measure the polarity and relative strength of the magnetic field.

Specifications:

The KY-024 module consists of a 49E Linear Hall-Effect Sensor, an LM393 Dual Differential Comparator, a potentiometer, two LEDs and six resistors. It's compatible with popular electronics platforms like Arduino, Raspberry Pi, Esp8266 and Teensy.

Arduino KY-024 Connection Diagram:

Connect board's power line (+) and ground (G) to 5V and GND respectively. Connect the digital signal (D0) to pin 3 on the Arduino and the board's analog signal (A0) to pin A0 on the Arduino.

KY-024 Example Code:

The following Arduino sketch will read values from both digital and analog interfaces on the KY-024.  The digital interface will turn on the Arduino's LED when a magnetic field is detected.

The analog interface starts at an initial value determined by the input voltage and the potentiometer, this value will increase or decrease depending on the intensity and polarity of the magnetic field.

Document:

Arduino KY-024 Linear Magnetic Hall Module.