LM393 Motor Speed Measuring Sensor Module

The LM393 Motor Speed Measuring Sensor Module is a compact optical sensing module designed to measure the rotational speed (RPM) of motors, wheels, and rotating objects. It uses an infrared transmitter and receiver pair along with an LM393 voltage comparator to detect changes in reflected IR signals and generate digital pulses corresponding to rotation. This module is widely used in robotics, automation, motor control systems, and speed monitoring applications. Available at Directronics, the LM393 Motor Speed Measuring Sensor Module is ideal for students, hobbyists, makers, educators, and professional engineers working on motion control and embedded system projects.

Features:

• Optical Infrared Speed Detection

• Based on LM393 Comparator IC

• Measures Motor and Wheel Rotation Speed

• Digital Pulse Output Signal

• High Sensitivity IR Detection

• Adjustable Detection Sensitivity

• Onboard LED Indicator

• Compact PCB Module Design

• Low Power Consumption

• Fast Response Time

• Easy Interface with Microcontrollers

• Compatible with Arduino, ESP32, STM32, and Raspberry Pi

Why Choose LM393 Motor Speed Measuring Sensor Module?

• Provides accurate speed and RPM measurement

• Enables closed-loop motor control applications

• Simple digital output for easy processing

• Compact design for robotics applications

• Helps monitor real-time motor performance

• Ideal for beginners, students, hobbyists, and professionals

Applications:

• Motor RPM Measurement

• Robot Wheel Speed Monitoring

• DC Motor Control Systems

• Encoder Applications

• Robotics Projects

• Conveyor Speed Monitoring

• Automation Systems

• Industrial Motion Control

• Arduino Speed Measurement Projects

• DIY Electronics Experiments

Technical Specifications:

• Product Type: Motor Speed Sensor Module

• Sensor Type: Infrared Optical Sensor

• Comparator IC: LM393

• Detection Method: IR Reflection / Optical Sensing

• Operating Voltage: 3.3V–5V DC

• Output Type: Digital Pulse Output

• Interface Pins: VCC, GND, DO

• Detection Distance: Adjustable (Typical)

• Frequency Response: High-Speed Pulse Detection

• Indicator: Power LED / Signal LED

• Sensitivity Adjustment: Potentiometer

• PCB Type: Compact Sensor Module

• Compatible Controllers: Arduino, ESP32, STM32, Raspberry Pi

Package Includes:

• 1 × LM393 Motor Speed Measuring Sensor Module

Related Products:

• N20 DC Gear Motor

• N20 DC Gear Motor Wheel

• LM393 Speed Sensor Module

• TCRT5000 5 Channel Array Tracking Sensor Module

• Arduino Uno

• ESP32 Development Board

• Motor Driver Modules

• 2 Wheel Drive Smart Robot Car Chassis Kit

• Jumper Wire Bundle (40Pcs)

Why Buy from Directronics?

Directronics provides quality development boards, communication modules, sensors, electronic components, robotics modules, power management solutions, and IoT products for students, makers, educational institutions, startups, and industry professionals. Explore our complete range of Arduino, ESP32, ESP8266, Raspberry Pi, power modules, motor drivers, programming tools, and embedded development products to bring your ideas to life.

Note:

Product images are for illustration purposes only. Actual module design, sensor placement, pin configuration, and detection range may vary depending on the manufacturing batch. Proper alignment between the sensor and rotating object is recommended for accurate speed measurement.