How to Use IR High Range NPN Optical Proximity Switch 3 - 80cm range E18-D80NK: Examples, Pinouts, and Specs

The E18-D80NK is an infrared (IR) proximity sensor designed to detect objects within a range of 3 to 80 cm. It utilizes an NPN transistor output, making it suitable for various applications in automation and robotics, such as object detection, obstacle avoidance, and presence sensing.

1. Power Supply: Connect the brown wire to a DC power supply ranging from 5V to 36V.
2. Ground: Connect the blue wire to the ground (GND) of your circuit.
3. Output: Connect the black wire to the input pin of your microcontroller or any other device that can read the NPN output.

- Brown wire to 5V (Arduino)
- Blue wire to GND (Arduino)
- Black wire to Digital Pin 2 (Arduino)

// Define the pin connected to the sensor's output
const int sensorPin = 2;

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

void loop() {
  // Read the sensor value
  int sensorValue = digitalRead(sensorPin);
  
  // Print the sensor value to the serial monitor
  Serial.print("Sensor Value: ");
  Serial.println(sensorValue);
  
  // Add a small delay to avoid flooding the serial monitor
  delay(100);
}

• Power Supply: Ensure the power supply voltage is within the specified range (5V to 36V DC).
• Mounting: Mount the sensor securely to avoid false readings due to vibrations or movement.
• Interference: Avoid placing the sensor near strong IR sources to prevent interference.
• Calibration: Adjust the detection range using the potentiometer on the sensor.

1. No Detection:

   • Solution: Check the power supply connections and ensure the sensor is receiving the correct voltage.
   • Solution: Verify the sensor's output is connected to the correct input pin on the microcontroller.

2. False Readings:

   • Solution: Ensure the sensor is not exposed to strong IR sources or direct sunlight.
   • Solution: Secure the sensor to prevent vibrations or movement.

3. Intermittent Detection:

   • Solution: Check for loose connections and ensure all wires are securely connected.
   • Solution: Adjust the detection range using the potentiometer.

Q1: Can the sensor detect transparent objects?

• A1: The sensor may have difficulty detecting transparent objects due to the nature of IR reflection.

Q2: What is the maximum detection range?

• A2: The maximum detection range is 80 cm, adjustable using the potentiometer.

Q3: Can I use the sensor with a 3.3V microcontroller?

• A3: The sensor requires a minimum of 5V for operation. You can use a level shifter to interface with a 3.3V microcontroller.

Q4: How do I adjust the detection range?

• A4: Use the potentiometer on the sensor to adjust the detection range. Turn it clockwise to increase the range and counterclockwise to decrease it.

This documentation provides a comprehensive guide to using the E18-D80NK IR High Range NPN Optical Proximity Switch. Whether you are a beginner or an experienced user, following these instructions and best practices will help you effectively integrate this sensor into your projects.