{"product_id":"ky-024-linear-hall-effect-magnetic-sensor-module-analog-digital-for-arduino","title":"KY-024 Linear Hall Effect Magnetic Sensor Module – Analog \u0026 Digital for Arduino","description":"\n\u003ch2\u003eKY-024 Linear Hall Effect Magnetic Sensor Module – Analog \u0026amp; Digital for Arduino\u003c\/h2\u003e\n\n\u003cp\u003eBuy the \u003cstrong\u003eKY-024 Linear Hall Effect Magnetic Sensor Module\u003c\/strong\u003e online in Pakistan from \u003cstrong\u003eRobostan.pk\u003c\/strong\u003e. This compact magnetic field sensing module is designed for Arduino, ESP32, robotics, automation, magnetic proximity detection, and DIY electronics projects.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eKY-024 Magnetic Sensor\u003c\/strong\u003e combines a linear Hall Effect sensor, commonly the \u003cstrong\u003e49E or AH49E\u003c\/strong\u003e, with an LM393 comparator to provide both analog and digital magnetic sensing outputs.\u003c\/p\u003e\n\n\u003cp\u003eIts analog output changes in response to magnetic field strength and polarity, while the digital output changes state when the measured signal crosses a threshold set by the onboard potentiometer.\u003c\/p\u003e\n\n\u003cp\u003eFeaturing a \u003cstrong\u003e3V to 5V operating voltage, four-pin interface, adjustable digital detection threshold, and onboard LED indicators\u003c\/strong\u003e, the KY-024 is a versatile solution for magnetic sensing and microcontroller projects.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eKY-024 linear Hall Effect magnetic sensor module\u003c\/li\u003e\n\u003cli\u003eBased on a 49E \/ AH49E linear Hall sensor on common versions\u003c\/li\u003e\n\u003cli\u003eIntegrated LM393 voltage comparator\u003c\/li\u003e\n\u003cli\u003eAnalog magnetic field sensing output (AO)\u003c\/li\u003e\n\u003cli\u003eDigital magnetic detection output (DO)\u003c\/li\u003e\n\u003cli\u003eAdjustable digital switching threshold\u003c\/li\u003e\n\u003cli\u003eOnboard potentiometer for threshold adjustment\u003c\/li\u003e\n\u003cli\u003eTypical operating voltage from 3V to 5V DC\u003c\/li\u003e\n\u003cli\u003eFour-pin interface: AO, GND, VCC and DO\u003c\/li\u003e\n\u003cli\u003eDetects magnetic fields without physical contact\u003c\/li\u003e\n\u003cli\u003eResponds to suitable north and south magnetic poles\u003c\/li\u003e\n\u003cli\u003ePower and detection indicator LEDs on common boards\u003c\/li\u003e\n\u003cli\u003eCompatible with Arduino analog and digital inputs\u003c\/li\u003e\n\u003cli\u003eSuitable for ESP32 and STM32 projects\u003c\/li\u003e\n\u003cli\u003eUsable with Raspberry Pi through digital GPIO or an external ADC\u003c\/li\u003e\n\u003cli\u003eCompact design for robotics and automation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e KY-024 Linear Hall Effect Magnetic Sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Number:\u003c\/strong\u003e KY-024\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor Type:\u003c\/strong\u003e Linear Magnetic Hall Effect Sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommon Hall Sensor IC:\u003c\/strong\u003e 49E \/ AH49E\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComparator IC:\u003c\/strong\u003e LM393\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Operating Voltage:\u003c\/strong\u003e 3V to 5V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnalog Output:\u003c\/strong\u003e Magnetic Field-Dependent Voltage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital Output:\u003c\/strong\u003e Threshold-Based HIGH\/LOW Signal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreshold Adjustment:\u003c\/strong\u003e Onboard Potentiometer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterface:\u003c\/strong\u003e Four-Pin Header\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin Labels:\u003c\/strong\u003e AO, GND, VCC and DO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED Indicators:\u003c\/strong\u003e Power and Digital Detection Status\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnetic Response:\u003c\/strong\u003e Sensitive to Magnetic Field Strength and Polarity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDetection Method:\u003c\/strong\u003e Non-Contact Magnetic Sensing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Platforms:\u003c\/strong\u003e Arduino, ESP32, STM32 and Raspberry Pi with Suitable Interfacing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e PCB Sensor Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eArduino magnetic field measurement projects\u003c\/li\u003e\n\u003cli\u003eMagnetic proximity detection\u003c\/li\u003e\n\u003cli\u003eMotor rotation and speed sensing\u003c\/li\u003e\n\u003cli\u003eMagnetic position monitoring\u003c\/li\u003e\n\u003cli\u003eRobotics and automation systems\u003c\/li\u003e\n\u003cli\u003eContactless magnetic switching\u003c\/li\u003e\n\u003cli\u003eElectronic security and alarm prototypes\u003c\/li\u003e\n\u003cli\u003eMagnet detection experiments\u003c\/li\u003e\n\u003cli\u003eDIY RPM counter projects\u003c\/li\u003e\n\u003cli\u003eEmbedded electronics development\u003c\/li\u003e\n\u003cli\u003eESP32 magnetic sensing projects\u003c\/li\u003e\n\u003cli\u003eEducational Hall Effect demonstrations\u003c\/li\u003e\n\u003cli\u003eSmart home sensing and monitoring projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow Does the KY-024 Hall Effect Sensor Work?\u003c\/h3\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eKY-024 Hall Effect Sensor Module\u003c\/strong\u003e detects magnetic fields using the Hall Effect principle.\u003c\/p\u003e\n\n\u003cp\u003eA linear Hall Effect sensor produces an analog voltage that changes in response to the magnetic field around the sensing element.\u003c\/p\u003e\n\n\u003cp\u003eWhen no significant magnetic field is present, the output of a typical linear Hall sensor is close to half of its supply voltage.\u003c\/p\u003e\n\n\u003cp\u003eMoving a suitable magnet toward the sensor changes its output voltage. Depending on the magnetic pole facing the sensor, the measured voltage may increase or decrease.\u003c\/p\u003e\n\n\u003cp\u003eThe module also includes an LM393 comparator that evaluates the sensor signal against an adjustable reference voltage.\u003c\/p\u003e\n\n\u003cp\u003eWhen the comparator's switching threshold is crossed, the digital output changes state and the onboard detection indicator may activate.\u003c\/p\u003e\n\n\u003ch3\u003eDual Analog and Digital Outputs\u003c\/h3\u003e\n\n\u003cp\u003eThe KY-024 provides two useful output types:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnalog Output (AO):\u003c\/strong\u003e Produces a voltage related to magnetic field strength and polarity. Useful for observing magnetic field changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital Output (DO):\u003c\/strong\u003e Changes between HIGH and LOW according to the adjustable comparator threshold.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe analog output is suitable for projects requiring relative magnetic field measurements, while the digital output can be used for magnet detection and threshold-triggered switching.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e The onboard potentiometer primarily adjusts the digital comparator threshold. It does not directly increase the sensitivity of the Hall sensor's analog output.\u003c\/p\u003e\n\n\u003ch3\u003eKY-024 Pinout\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAO:\u003c\/strong\u003e Analog magnetic field sensing output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGND:\u003c\/strong\u003e Ground connection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVCC:\u003c\/strong\u003e Positive supply voltage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDO:\u003c\/strong\u003e Digital threshold detection output\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eAlways follow the pin markings on the actual PCB because pin order can vary between manufacturers.\u003c\/p\u003e\n\n\u003ch3\u003eArduino Compatibility\u003c\/h3\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eKY-024 Magnetic Sensor\u003c\/strong\u003e can be used with Arduino UNO, Nano, Mega and compatible microcontrollers.\u003c\/p\u003e\n\n\u003cp\u003eA typical Arduino UNO connection is:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKY-024 AO:\u003c\/strong\u003e Arduino A0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKY-024 DO:\u003c\/strong\u003e Arduino D2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKY-024 VCC:\u003c\/strong\u003e Arduino 5V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKY-024 GND:\u003c\/strong\u003e Arduino GND\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe analog output can be measured using Arduino's analogRead() function, while the digital output can be checked using digitalRead().\u003c\/p\u003e\n\n\u003cp\u003eBy adjusting the onboard potentiometer, developers can set an appropriate digital switching point for their application.\u003c\/p\u003e\n\n\u003ch3\u003eESP32 and Raspberry Pi Compatibility\u003c\/h3\u003e\n\n\u003cp\u003eThe KY-024 can be connected to compatible ESP32 boards when the analog and digital output voltages are within the controller's supported input range.\u003c\/p\u003e\n\n\u003cp\u003eFor 3.3V controllers, use a suitable supply and verify electrical compatibility before connecting the outputs.\u003c\/p\u003e\n\n\u003cp\u003eRaspberry Pi boards can read the digital output through a suitable GPIO connection. Reading the analog output requires an external analog-to-digital converter such as an MCP3008 or ADS1115.\u003c\/p\u003e\n\n\u003ch3\u003eKY-024 vs KY-003 Hall Effect Sensor\u003c\/h3\u003e\n\n\u003cp\u003eThe KY-024 and KY-003 both detect magnetic fields, but they have different sensing capabilities.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKY-024:\u003c\/strong\u003e Linear Hall Effect module with both analog and adjustable digital outputs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKY-003:\u003c\/strong\u003e Digital Hall Effect switch module that responds when a suitable magnetic field crosses its switching threshold.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eChoose the KY-024 when analog magnetic field information or an adjustable switching threshold is required.\u003c\/p\u003e\n\n\u003ch3\u003eKY-024 vs KY-021 Reed Switch\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKY-024:\u003c\/strong\u003e Uses solid-state magnetic field sensing electronics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKY-021:\u003c\/strong\u003e Uses mechanical reed contacts that open or close in the presence of a suitable magnetic field.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe KY-024 is useful for observing relative magnetic field changes, while the KY-021 is suitable for simple magnet-activated switching.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose the KY-024?\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eDual Outputs:\u003c\/strong\u003e Provides both analog measurement and digital switching capability.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAdjustable Threshold:\u003c\/strong\u003e Onboard potentiometer lets developers set a digital switching reference.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNon-Contact Detection:\u003c\/strong\u003e Detects magnetic fields without mechanical contact.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMicrocontroller Compatibility:\u003c\/strong\u003e Integrates with Arduino and other controllers using simple analog and digital connections.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eEducational Value:\u003c\/strong\u003e Ideal for learning about Hall Effect sensing, analog voltage measurement, comparators and magnetic field detection.\u003c\/p\u003e\n\n\u003ch3\u003eImportant Usage Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe KY-024 detects magnetic fields, not ordinary non-magnetic objects.\u003c\/li\u003e\n\u003cli\u003eIt does not provide calibrated magnetic flux density readings without suitable calibration.\u003c\/li\u003e\n\u003cli\u003eAnalog output changes depend on field strength and magnetic polarity.\u003c\/li\u003e\n\u003cli\u003eDigital switching behavior depends on the potentiometer adjustment.\u003c\/li\u003e\n\u003cli\u003eActual sensor sensitivity varies between Hall sensor IC versions.\u003c\/li\u003e\n\u003cli\u003eConfirm the pin arrangement before applying power.\u003c\/li\u003e\n\u003cli\u003eUse a regulated low-voltage DC supply.\u003c\/li\u003e\n\u003cli\u003eDo not expose 3.3V-only controller inputs to 5V signals.\u003c\/li\u003e\n\u003cli\u003eRaspberry Pi analog measurement requires an external ADC.\u003c\/li\u003e\n\u003cli\u003eKeep high-current loads away from the module signal outputs.\u003c\/li\u003e\n\u003cli\u003eDo not connect the sensor directly to AC mains or high-voltage circuits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x KY-024 Linear Hall Effect Magnetic Sensor Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eBuy KY-024 Linear Hall Effect Sensor in Pakistan\u003c\/h3\u003e\n\n\u003cp\u003eLooking for a \u003cstrong\u003eKY-024 Linear Hall Effect Magnetic Sensor Module in Pakistan\u003c\/strong\u003e? Shop online at \u003cstrong\u003eRobostan.pk\u003c\/strong\u003e for magnetic sensors, Arduino modules, ESP32 development boards, robotics components, electronic switches and DIY electronics accessories.\u003c\/p\u003e\n\n\u003cp\u003eThe KY-024 is suitable for students, engineers, robotics enthusiasts and electronics developers working on magnetic field sensing and automation projects.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eOrder your KY-024 Magnetic Sensor Module from Robostan.pk\u003c\/strong\u003e with nationwide delivery across Pakistan, including Lahore, Karachi, Islamabad, Rawalpindi, Faisalabad, Multan, Peshawar and other cities.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eRobostan.pk – Build. Innovate. Create.\u003c\/strong\u003e\u003c\/p\u003e\n","brand":"ROBOSTAN","offers":[{"title":"Default Title","offer_id":68374789357934,"sku":null,"price":150.0,"currency_code":"PKR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1019\/7391\/8062\/files\/ChatGPTImageNov13_2026_05_04_46PM-2.png?v=1794583217","url":"https:\/\/robostan.pk\/products\/ky-024-linear-hall-effect-magnetic-sensor-module-analog-digital-for-arduino","provider":"ROBOSTAN","version":"1.0","type":"link"}