Interface FC-33 Speed Measuring Photoelectric Sensor Module With Arduino

Introduction

The Infrared Speed Sensor Module is an IR counter that has an IR transmitter and receiver. If any obstacle is placed between these sensors, a signal is sent to the microcontroller. The module can be used in association with a microcontroller for motor speed detection, pulse count, position limit, etc.

Hardware Overview

LED (Light Emitting Diode):

• The optointerruptor typically includes an LED that emits infrared (IR) or visible light.

Gap or Interrupter Mechanism:

• There is a physical gap or interrupter between the LED and the phototransistor/photodiode. When this gap is interrupted by an object, it blocks the emitted light from reaching the receiver, causing a change in output.

LM393 Dual Comparators:

• The LM393 IC contains two independent voltage comparators in a single package.

Working Principle

The Infrared Speed Sensor Module has 1 H2010 photocell, which consists of a phototransistor and an infrared light emitter packaged in a 10 cm wide black plastic housing.

When operating, the infrared light-emitting diode continuously emits infrared light (invisible light), and the photosensitive triode will conduct if it receives it.

Application

• Automotive: Used for vehicle speed detection in speedometers, cruise control systems, and traffic monitoring devices.
• Industrial Automation: Monitoring conveyor belt speed, rotational speed of motors, and production line speed in manufacturing processes.
• Robotics: Implementing obstacle avoidance and motion detection in robotic systems for navigation and collision avoidance.
• Security Systems: Detecting movement and triggering alarms in security systems and automated door openers.
• Sports and Fitness: Measuring speed in athletic training equipment such as treadmills and cycling machines.
• Home Appliances: Controlling the speed of fans and motors based on detected motion or load conditions.
• IoT (Internet of Things): Integrating with IoT devices for smart home automation and monitoring applications.
• Research and Development: Utilizing in experimental setups to measure the speed of rotating or moving objects in laboratory settings.

Technical Specifications

• Operating voltage of 3.3 V to 5 V
• The width of the optical coupling slot: 15mm
• Digital output
• The output valid signal is low.
• It is useful for workpiece counts.
• It’s also useful for industry counting, motor speed testing .

Pinout

• VCC: Connect to a 5V power supply.
• GND: Connect to ground (0V).
• OUT: Output pin that provides a digital signal (HIGH or LOW) when an object is detected.

Circuit Diagram

Programming With Arduino

Step 1: Open your first sketch

• Open the Arduino IDE.
• Copy and paste the provided code into a new sketch in the Arduino IDE:

// Define pin connections
#define SENSOR_OUT_PIN 2  // Connect OUT pin of FC-33 sensor to Arduino digital pin 2

void setup() {
  Serial.begin(9600);  // Initialize serial communication
  pinMode(SENSOR_OUT_PIN, INPUT);  // Set SENSOR_OUT_PIN as input
}

void loop() {
  // Read the state of the sensor output
  int sensorValue = digitalRead(SENSOR_OUT_PIN);

  // Print the sensor value (HIGH or LOW) to Serial Monitor
  if (sensorValue == HIGH) {
    Serial.println("Object Detected!");
  } else {
    Serial.println("No Object Detected");
  }

  delay(500);  // Delay for stability
}

Programming With Arduino

Step 1: Open your first sketch

• Open the Arduino IDE.
• Copy and paste the provided code into a new sketch in the Arduino IDE:

Programming With Arduino

Step 1: Open your first sketch

• Open the Arduino IDE.
• Copy and paste the provided code into a new sketch in the Arduino IDE:

Step 2: Select your board type and port

• Go to Tools > Board and select your Arduino board (e.g., Arduino Uno).

• Go to Tools > Port and select the port to which your Arduino is connected.

• Verify and upload the code to your Arduino board.

Step 3: Open Serial Monitor:

• Once the code is uploaded successfully, open the Serial Monitor in the Arduino IDE.
• Set the baud rate to 9600 baud.