Infrared IR Optical Counter Tachometer RPM Speed Measuring Sensor Optocoupler Module

The Infrared IR Optical Counter Tachometer RPM Speed Measuring Sensor Optocoupler Module is an essential and highly reliable component for electronics, robotics, and Arduino-based automation projects. Designed for RPM speed measurement, motor shaft rotation counting, line following robots, and object detection, this module delivers fast response and precise detection using infrared technology.

Equipped with a high-quality IR LED and Photodiode, the sensor detects interruptions when an object passes through the 5mm slot. When obstructed, the output state changes instantly, allowing accurate calculation of revolutions per minute (RPM) or position tracking. It includes onboard indicator LEDs for both Power and Digital Output status for easy debugging and real-time monitoring.

Key Features

• Wide Voltage Support: Operates on 3.3V – 5V DC for compatibility with Arduino, ESP8266, ESP32, and Raspberry Pi
• High Accuracy: Precise detection with 5mm slot width
• Dual Output: Supports both Analog and Digital signal output
• Infrared Optocoupler: Stable and noise-resistant object sensing
• Compact Size: Ideal for small robotic and automation systems
• Status LEDs: Easy troubleshooting with visible output indication

How It Works?

This encoder speed sensor functions as a Photo-Interrupter. When the IR beam between the Emitter (IR LED) and Receiver (Photodiode) is broken by a rotating object — such as a motor wheel with slots — the module outputs pulses. These pulses can be processed via Arduino code to calculate speed, RPM, and motion direction.

Technical Specifications

• Operating Voltage: 3.3V – 5V DC
• Output Type: Analog (AO) and Digital (DO)
• PCB Size: 3.2cm × 1.4cm
• Slot Gap: 5mm
• Detection Principle: IR light interruption

Pin Configuration

• VCC: 3.3V–5V Power Supply
• GND: Ground
• DO: Digital Output Signal
• AO: Analog Output Signal

Applications

• DC/BLDC motor speed measurement
• Robotics automation
• Object detecting systems
• Smart conveyors and industrial feedback systems
• Rotary encoder projects
• DIY electronics and research experiments

Package Includes

• 1 × IR Tachometer RPM Speed Measurement Sensor Module

This RPM tachometer sensor for Arduino is a must-have module for creating advanced electronics projects such as motor control, real-time monitoring, and automation feedback systems. Its durable design, high sensitivity, and compatibility with popular microcontrollers make it perfect for both DIY hobbyists and professional engineers.

Buy now from Pakistan’s trusted electronics store — CircuitHub.pk — and power up your innovation!