About this item

🌀 Slot-Type Optocoupler Speed Sensor Module

The slot-type optocoupler speed sensor module is an optical sensor used to measure rotational speed (RPM) or detect object passage using an infrared beam interruption.
It is ideal for Arduino, ESP32, Raspberry Pi, and robotics projects.

🛡️ Features & Advantages

• 🌀 Speed (RPM) measurement and position detection
• 🔦 Infrared emitter and receiver pair
• 🔘 Digital output (DO)
• 🎚️ Adjustable sensitivity via potentiometer (version dependent)
• ⚡ Compatible with 3.3 V and 5 V
• 🧰 Ready-to-use module

📦 Technical Description

• 🧩 Type: slot-type optical sensor (optocoupler)
• 🔧 Comparator: LM393 (depending on module)
• 🔌 Supply voltage: 3.3 – 5 V DC
• 🔘 Output: digital (pulse signal)
• 🎯 Principle: IR beam interruption
• 📏 Slot width: ~5 mm (model dependent)
• 📏 Dimensions: approx. 32 × 14 mm

🛠️ Applications

• 🤖 Robotics and wheel encoders
• ⚙️ Rotational speed (RPM) measurement
• 📍 Position detection and object counting
• 🧪 Electronics prototyping
• 📚 Educational projects

⚠️ Usage Notes

• ❗ Use a proper slotted disk for accurate readings
• 🔧 Adjust sensitivity to avoid false triggering
• 🛡️ Avoid strong ambient light interference

✨ Key Features

• 🌀 Speed and position sensing
• 🔦 Slot-type optical detection
• 🔘 Digital output
• ⚡ 3.3V / 5V compatible
• 📦 Ideal for encoders and robotics