Description
🚗 Intelligent Car Speed Measurement Module – Optical Encoder Speed Sensor
Upgrade your robot car with real-time speed feedback. This Intelligent Car Speed Measurement Module is an optical encoder sensor designed for Arduino robot cars, wheel rotation counting, motor RPM detection, speed measurement, and robotics learning projects.
এই Intelligent Car Speed Measurement Module robot car, motor speed measurement, wheel rotation counting এবং Arduino robotics project-এর জন্য ব্যবহার করা হয়। Encoder/code wheel sensor slot-এর ভিতর দিয়ে ঘুরলে module pulse detect করে এবং microcontroller-এ digital signal পাঠায়।
This module is very useful for smart car speed feedback, motor control, line follower robot tuning, PID speed control experiments, wheel rotation counting, and robotics learning projects.
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✨ Key Features / প্রধান বৈশিষ্ট্য
✅ Optical encoder speed measurement sensor module
✅ Designed for intelligent robot car and motor speed detection
✅ Detects rotation pulses from encoder/code wheel
✅ Digital pulse output for Arduino, ESP32 and other controllers
✅ Built-in indicator light for easy testing
✅ Compact 3-pin connection: VCC, GND, OUT
✅ Useful for RPM measurement and wheel pulse counting
✅ Suitable for PID motor speed control experiments
✅ Ideal for robotics, automation and educational projects
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🎯 Applications / ব্যবহার ক্ষেত্র
• Arduino robot car speed measurement
• Smart car wheel rotation counting
• Motor RPM detection project
• Encoder pulse counting system
• Line follower robot speed feedback
• Obstacle avoiding robot motor monitoring
• PID motor speed control experiment
• DIY tachometer project
• School, college and university robotics project
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📦 Package Includes / প্যাকেজে যা থাকছে
• 1 × Intelligent Car Speed Measurement Sensor Module
Note: Encoder code wheel, motor, Arduino board and jumper wires are not included unless mentioned separately.
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⚙️ Specifications / স্পেসিফিকেশন
• Product Type: Optical Speed Measurement Sensor Module
• Sensor Type: Infrared slot / optical encoder sensor
• Output Type: Digital pulse output
• Pinout: VCC, GND, OUT
• Operating Voltage: Commonly 3.3V–5V DC
• Indicator: Onboard signal indicator LED
• Compatible Boards: Arduino, ESP32, STM32, Raspberry Pi
• Recommended Use: Speed measurement, encoder counting, RPM detection, robot car projects
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🔌 Pin Description / পিন পরিচিতি
• VCC: Power supply input
• GND: Ground connection
• OUT: Digital pulse signal output
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🧠 How It Works / কীভাবে কাজ করে
The module has a U-shaped optical sensor. When an encoder or code wheel rotates through the sensor slot, the transparent and blocked sections of the wheel create pulse signals. Arduino or another microcontroller counts these pulses to calculate wheel speed or motor RPM.
এই module-এর U-shaped optical sensor-এর ভিতর দিয়ে encoder/code wheel ঘুরলে wheel-এর gap এবং blocked অংশের কারণে pulse তৈরি হয়। Arduino pulse count করে motor speed বা RPM calculate করতে পারে।
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💻 Arduino Test Code
Use this simple test program to count pulses from the speed sensor module.
#define SENSOR_PIN 2
volatile unsigned long pulseCount = 0;
unsigned long previousMillis = 0;
unsigned long interval = 1000;
void countPulse() {
pulseCount++;
}
void setup() {
Serial.begin(9600);
pinMode(SENSOR_PIN, INPUT_PULLUP);
attachInterrupt(digitalPinToInterrupt(SENSOR_PIN), countPulse, FALLING);
Serial.println(“Speed Sensor Test Started”);
}
void loop() {
unsigned long currentMillis = millis();
if (currentMillis – previousMillis >= interval) {
previousMillis = currentMillis;
noInterrupts();
unsigned long pulses = pulseCount;
pulseCount = 0;
interrupts();
Serial.print("Pulses per second: ");
Serial.println(pulses);
}
}
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📌 RPM Calculation Formula
To calculate RPM, you need to know how many slots or pulses your encoder wheel gives per full rotation.
RPM = Pulses per second × 60 ÷ Pulses per rotation
Example:
If your encoder wheel has 20 slots and Arduino reads 100 pulses per second:
RPM = 100 × 60 ÷ 20 = 300 RPM
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⚠️ Important Notes / গুরুত্বপূর্ণ নোট
• Encoder/code wheel is required for speed measurement.
• Make sure the code wheel passes correctly through the sensor slot.
• Keep the sensor aligned properly for stable pulse reading.
• Avoid strong direct sunlight on the optical sensor during testing.
• Use interrupt pins for accurate pulse counting in Arduino.
• For Arduino UNO, pin 2 or pin 3 is recommended for interrupt reading.
• Product PCB color, pin marking and component layout may vary depending on stock batch.
• This is a speed sensor module only, not a complete robot car speed system.
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❓ Frequently Asked Questions / FAQ
Q1: What is this module used for?
It is used for motor speed measurement, wheel rotation counting, encoder pulse detection and RPM measurement.
Q2: Can I use it with Arduino?
Yes. It works easily with Arduino using a digital input pin.
Q3: Does it need an encoder wheel?
Yes. To measure speed, an encoder/code wheel should pass through the optical sensor slot.
Q4: Does it give analog output?
No. This type of module generally gives digital pulse output.
Q5: Can I use it for robot car speed control?
Yes. It can be used for speed feedback in robot car and motor control projects.
Q6: Can it calculate RPM directly?
No. The module gives pulses. Arduino or another controller calculates RPM using pulse count and encoder wheel slot count.
Q7: Does it work with ESP32?
Yes. It can work with ESP32 using a suitable GPIO input pin.
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Intelligent Car Speed Measurement Module Optical Encoder Sensor
Buy intelligent car speed measurement module optical encoder sensor for Arduino robot car, motor RPM detection, wheel rotation counting and robotics speed control projects.
