SKU: SENS-2777
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Waveshare Hall Effect Sensor Module - Analog/Digital Output

₹259.00 (Inclusive of all taxes)
Out of Stock

The Waveshare Hall Effect Sensor Module integrates a 49E Hall sensor and an LM393 comparator to provide both analog and digital outputs for magnetic field detection. It operates from 2.3V to 5.3V, making it compatible with 3.3V and 5V logic systems like Arduino, Raspberry Pi, and ESP32.

Features

  • Dual analog (AOUT) and digital (DOUT) signal outputs for flexible interfacing.
  • Wide operating voltage range from 2.3V to 5.3V supports 3.3V/5V microcontrollers.
  • Integrated LM393 comparator with adjustable sensitivity via onboard potentiometer.
  • Open-collector digital output switches low and illuminates an onboard LED upon magnetic detection.
  • Compact PCB design (27.0mm x 15.5mm) with 2.0mm mounting holes for easy integration.

Out of stock

Description

This module utilizes the Hall effect principle, where the 49E sensor generates a voltage proportional to the strength and polarity of an applied magnetic field. The analog output (AOUT) provides a continuous voltage signal relative to magnetic flux density, while the digital output (DOUT) provides a clean, logic-level trigger when the field exceeds a user-adjustable threshold set by the onboard potentiometer.

The integrated LM393 voltage comparator ensures stable digital switching and high noise immunity. The module’s low-voltage operation and dual-output design make it suitable for precise magnetic sensing tasks in battery-powered devices, position sensing, and speed measurement applications within industrial and prototyping environments.

Key Features

  • Core 49E linear Hall-effect sensor for proportional magnetic field measurement.
  • Precision LM393 comparator provides robust digital output with hysteresis.
  • Onboard sensitivity adjustment potentiometer for fine-tuning trigger threshold.
  • Open-collector digital output with pull-up resistor and status LED indicator.
  • Wide 2.3V to 5.3V supply range ensures compatibility with 3.3V and 5V logic families.
  • Compact and durable PCB with standard 2.0mm mounting holes for secure installation.
  • Includes a pre-attached 4-pin female Jumper cable for quick connection to development boards.

Applications

  • Non-contact position sensing in robotics and linear actuators.
  • RPM and speed detection using magnetic encoders on rotating shafts.
  • Proximity and end-stop detection in 3D printers and CNC machines.
  • Magnetic field strength measurement for laboratory and educational setups.
  • Reed switch replacement in low-power battery-operated devices.

Technical Specifications

Sensor Type49E Linear Hall-Effect Sensor
Supply Voltage2.3 VDC to 5.3 VDC
Output SignalsAnalog Output (AOUT), Digital Output (DOUT)
Output TypeAnalog Voltage, Open-Collector Digital
Comparator ICLM393
Sensitivity AdjustmentYes (Onboard Potentiometer)
Status IndicatorLED for Digital Output
Module Dimensions27.0 mm x 15.5 mm
Mounting Hole Size2.0 mm
Connector4-pin Header (Cable Included)
Primary ColorBlue PCB

Frequently Asked Questions

What is the difference between the AOUT and DOUT pins on this Hall sensor module?

The AOUT pin provides an analog voltage output directly proportional to the strength of the detected magnetic field, useful for precise measurements. The DOUT pin is a digital output from the LM393 comparator; it switches to a logic LOW state when the magnetic field exceeds the threshold set by the onboard potentiometer, and this triggers the onboard LED.

What is the operating voltage range, and can I use it with a 3.3V microcontroller like an ESP32?

Yes, the module operates from 2.3V to 5.3V, making it fully compatible with both 3.3V systems like ESP32 or Raspberry Pi and traditional 5V systems like Arduino Uno. The digital output is logic-level compatible across this entire supply range.

How do I adjust the sensitivity or trigger point of the digital output?

Adjust the blue onboard potentiometer using a small screwdriver. Turning it changes the reference voltage for the LM393 comparator, thereby setting the magnetic field strength threshold at which the digital output switches and the LED illuminates.

Does the module require any external pull-up resistors for the digital output?

No, the module includes an integrated pull-up resistor on the DOUT line. You can connect the DOUT pin directly to a microcontroller's digital input pin to read a HIGH (no field) or LOW (field detected) state.

Package Includes

  • 1 x Waveshare Hall Effect Sensor Module
  • 1 x 4-pin Female Jumper Wire

Additional Information

Weight 0.002 kg
Dimensions 1.55 × 2.7 cm