IR Slot Speed Sensor Module LM393 3.3-5V RPM Encoder Arduino Motor

🔧 IR Slot Speed Sensor Module | AuscomTech

This IR slotted speed sensor module is designed for accurate RPM measurement and encoder pulse detection in motor control systems.

It uses an infrared emitter and receiver within a 5mm slot, paired with an LM393 comparator to deliver stable and reliable switching signals.

Ideal for motor speed monitoring, pulse counting, and automation projects, it interfaces easily with Arduino, PIC, AVR, and other microcontroller platforms.

⭐ Key Features

• 5mm Slot Design – Perfect for encoder discs, interrupter wheels, and object detection.
• LM393 Comparator – Ensures clean, stable digital output signals.
• Wide Voltage Range – Operates from 3.3V to 5V for broad compatibility.
• Digital Output Signal – Provides precise pulse output for speed and position tracking.
• Adjustable Sensitivity – Onboard trimpot allows threshold tuning for different environments.
• Compact Form Factor – Easy to integrate into embedded and robotics projects.

📊 Technical Specifications

• Module Type: IR slotted speed sensor
• Comparator IC: LM393
• Operating Voltage: 3.3V – 5V
• Output Type: Digital switching output
• Adjustment: Onboard sensitivity trimpot
• Slot Width: 5mm
• Dimensions: Approx. 3.2cm × 1.4cm × 0.7cm
• Weight: Approx. 8g

🧩 Typical Applications

• Motor RPM measurement
• Encoder pulse detection
• Robotics speed feedback systems
• DIY tachometers
• Automation and control systems
• Counter and timing circuits
• Microcontroller development projects

⚠️ Important Notes

• Requires a slotted disc or interrupter object for accurate detection.
• Output signal depends on correct threshold adjustment.
• Compatible with Arduino, PIC, AVR, ESP32, and similar platforms.
• Ensure proper alignment of object within sensor slot for best results.

📦 Package Includes

• 1 × IR Slot Speed Sensor Module

🔗 Recommended Accessories (Not Included)

• Encoder disc – for RPM and pulse measurement
• Dupont jumper wires – for easy connection
• Microcontroller board – for signal processing
• DC motor – for testing and development