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IR Photoelectric Encoder Sensor 4Pin

⚙️ IR Photoelectric Encoder Sensor Module – 4 Pin

Measure Rotation Speed, Direction, or Position of Motors

The IR Photoelectric Encoder Sensor Module is a compact, reliable sensor that detects rotational movement using infrared reflection. Often used in combination with encoder discs or slotted wheels, it’s ideal for projects requiring speed, position, or direction sensing — such as motor control, line counting, and robotic feedback systems.

⚙️ Technical Specifications

ParameterSpecification
Sensor TypeInfrared Reflection (Photo-interrupter)
Operating Voltage3.3V – 5V DC
Output SignalDigital (HIGH/LOW based on reflection)
Output TypeOpen-Collector (pull-up required)
Detection RangeTypically 0.5–2 mm (depends on surface)
Speed RangeSupports high-speed encoding (motor RPM)
Interface PinsVCC, GND, DO (digital out), AO (optional analog out on some models)
Board Size~30mm x 15mm

✅ Features

  • 🔁 Detects movement by sensing reflected IR from encoder discs or stripes
  • 🎯 Suitable for speed measurement, pulse counting, and motor feedback
  • 🧠 Compatible with Arduino, ESP32, STM32, Raspberry Pi
  • 🔌 Easy 4-pin connection: VCC, GND, Digital Out, (optional Analog Out)
  • 🧰 Great for robotics, mechatronics, and conveyor systems

🧪 Typical Arduino Connection

Module PinArduino Pin
VCC5V
GNDGND
DOD2 (Digital Pin)
AO (if available)A0 (Optional)

Simple Arduino Code Example:

cpp
CopyEdit
int encoderPin = 2;

void setup() {
  pinMode(encoderPin, INPUT);
  Serial.begin(9600);
}

void loop() {
  int state = digitalRead(encoderPin);
  Serial.println(state);
  delay(50);
}

🧠 Usage Tips

  • Use with encoder wheels or stripes on DC motor shafts
  • Add interrupts in Arduino to count pulses for precise RPM
  • Works well in line followers or position tracking robots

🎥 YouTube Tutorial


55.00 LE 55.00 LE

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