M5Stack Hall Effect Unit (A3144E Hall Sensor)

Description

The M5Stack Hall Effect Unit (A3144E Hall Sensor) is a compact Hall sensor module for detecting magnetic fields, proximity, position, and speed-related events. It integrates three A3144E Hall effect switches, with logic processing handled by a 74HC08D gate IC.

The M5Stack Hall Effect Unit (A3144E Hall Sensor) outputs a low-level signal when an S magnetic pole approaches the front side of the sensor or an N magnetic pole approaches the back side. The onboard red LED lights when the magnetic state is detected, making the unit useful for door magnetic alarms, magnetic proximity sensing, rotation detection, and other embedded projects.

Features

• Unipolar Hall switch sensing
• Three integrated A3144E Hall effect switches
• 74HC08D logic processing circuit
• Fast response speed and high sensitivity
• Low-level active digital output
• Red LED status indicator
• HY2.0-4P Grove interface
• Building block compatible mounting design

Specifications

Applications

• Door magnetic alarm systems
• Magnetic field proximity sensing
• Speed and rotation measurement
• Position detection in embedded devices
• Magnet-triggered interaction projects

Product List

• 1 x Unit Hall
• 1 x HY2.0-4P Grove connection cable (20cm)
• 1 x Magnet

Other Content

PinMap

Resources

• Product documentation
• A3144E datasheet
• Arduino example
• UiFlow2 documentation
• EasyLoader example

FAQ

How does this Hall sensor unit trigger output?

It outputs a low-level signal when an S pole approaches the front side or an N pole approaches the back side of the sensor.

What can it be used for?

It is suitable for door magnetic alarms, magnetic proximity sensing, speed measurement, rotation detection, and position feedback projects.

Does the module include a status indicator?

Yes. The onboard red LED lights when the magnetic state is detected.