U Type Slot Sensor – Hall Effect Current & RPM Detection Module

The U Type Slot Sensor is a high-precision Hall Effect sensor designed for non-contact detection of magnetic fields, rotational speed, and current changes. Its U-shaped slot allows a rotor or ferromagnetic target to pass through, triggering a digital pulse output. This makes it ideal for RPM measurement, motor speed detection, current monitoring, and industrial automation.

Using the Hall Effect principle, the sensor generates a voltage output when a magnetic field passes through its slot. This non-contact measurement method reduces mechanical wear and increases the lifespan of your systems. It is commonly integrated with Arduino (https://electroway.org/product-category/arduino-and-accessories/arduino-boards/), Raspberry Pi (https://electroway.org/product-category/electronic-accessories/mounts-and-cases/raspberry-pi-mounts-and-cases/), and NodeMCU (https://electroway.org/product-category/iot-and-smart-solutions/iot-modules/nodemcu/) for DIY and IoT projects.

Key Technical Features

• Sensor Type: U Type Hall Effect Slot Sensor

• Output Type: Digital Pulse (HIGH/LOW)

• Supply Voltage: 5V DC typical

• Detection Method: Magnetic or ferromagnetic material passing through the slot

• Applications: RPM monitoring, motor speed control, current sensing

• Slot Width: Standard sizes available for various targets

• Response Time: High-speed, suitable for fast-rotating shafts

• Non-Contact: Eliminates mechanical wear and friction

• Compatibility: Arduino, NodeMCU, Raspberry Pi, industrial controllers

Applications & Use Cases

Industrial & Automation

• Motor RPM measurement

• Conveyor belt speed monitoring

• Rotational equipment feedback

Electronics & Robotics

• DIY robot wheel speed detection

• Smart vehicle speed monitoring

• Encoder replacement in robotics

Power & Current Measurement

• Hall Effect-based current sensors

• Electrical load monitoring

• Energy metering projects

For additional components, visit:

• Electronics Components: https://electroway.org/product-category/electronics-components/

• Arduino & Accessories: https://electroway.org/product-category/arduino-and-accessories/

Precautions

• Avoid placing strong external magnets near the sensor unless intended.

• Ensure proper alignment with the rotor or target for accurate pulse detection.

• Maintain supply voltage within recommended range (typically 5V).

• For long wires, use shielded cables to prevent noise interference.

• Avoid mechanical stress on the sensor body to maintain slot integrity.

YouTube Tutorial

Watch Video:https://www.youtube.com/watch?v=U9cG4MsSgIk

4. Product Summary

The U Type Slot Hall Effect Sensor is a compact, durable, and precise sensor for measuring current, RPM, and rotational speed. Its non-contact design, fast response, and compatibility with Arduino, NodeMCU, and Raspberry Pi make it ideal for robotics, automation, and industrial monitoring projects.