Infrared IR Optical Counter Tachometer RPM Speed Measuring Sensor Optocoupler Module

Infrared IR Optical Counter Tachometer RPM Speed Measuring Sensor Optocoupler Module for Arduino is a compact and accurate sensor module designed for RPM measurement and object detection in Arduino projects. It uses infrared LED and photodiode technology to detect object interruptions with high precision.

Key Features

• Operating Voltage: 3.3V – 5V DC for flexible use with Arduino boards
• Slot Width: 5mm for accurate object detection
• Output: Analog and digital signals for versatile applications
• Photo-Coupler module detects objects using infrared technology

How It Works?

The encoder speed sensor combines an IR LED and an IR photodiode to act as a Photo-Coupler or Opto-Coupler. The sensor detects objects passing through its slot: the digital output goes HIGH when the object obstructs the sensor gap and LOW when the path is clear. LEDs indicate power and digital output status.

Technical Specifications

• Operating Voltage: 3.3V – 5V DC
• Slot Width: 5mm
• Output Signal: Analog and Digital
• PCB Dimension: 3.2 cm × 1.4 cm

Pinout

• VCC: Connect to 3.3V – 5V power supply
• GND: Ground
• DO: TTL digital switch signal output
• AO: Not applicable

Package Includes

• 1 × Tachometer RPM sensor module for Arduino

This Arduino tachometer sensor module is perfect for projects requiring RPM measurement, speed monitoring, or precise object detection. Its compact design, dual output signals, and IR opto-coupler technology make it reliable for hobbyist and professional electronics projects.