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The Speed Sensor LM393 Counter is a digital sensor module used to measure speed (RPM) and count pulses using infrared detection and LM393 comparator circuit.
This module detects rotation or object movement by sensing interruptions in IR light and outputs digital pulse signals. It is commonly used for motor RPM measurement, speed counting, encoder projects and automation systems. Compatible with Arduino, ESP32 and other microcontrollers for accurate speed monitoring.
Key Features:
• Model: LM393 speed sensor counter module.
• Output Type: Digital pulse output signal.
• Detection Method: IR based speed and count sensing.
• Comparator IC: LM393 onboard comparator for stable output.
• Microcontroller Compatible: Works with Arduino, ESP32, ESP8266.
• Easy Setup: Simple VCC, GND and OUT pins connection.
How it works:
1. IR transmitter sends infrared light continuously.
2. Rotating disk/object interrupts IR beam repeatedly.
3. LM393 comparator converts signal into clean digital pulses.
4. Microcontroller counts pulses to calculate RPM or speed.
Applications:
• DC motor RPM measurement
• Robot wheel speed sensing
• DIY tachometer projects
• Encoder and pulse counting system
• Speed control automation projects
• Arduino and microcontroller speed monitoring
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