E18-D80NK Compact Adjustable Infrared Proximity Sensor Module

You can find the link to the full bracket information at the bottom of this page or click on the pic.

There is a 3-wire cable attached to the assembly.  The leads are tinned.  This cable can be cut to length for the application the sensor will be used in.  The wire color pin-out is as shown below.

Cable Pin-out

• Brown Wire – Connect to 5V.
• Blue Wire –     Connects to Ground
• Black Wire  –  Logic Output, active LOW when object detected and LED lights

OUR EVALUATION RESULTS:

These modules work quite well, with reliable detection.  Since the amount of IR reflection can vary depending on materials and angles, the detected distance may vary somewhat when using under unknown conditions such as for a robotic vehicle.

The maximum detection range will vary depending on the reflectivity of the surface.  With a gloss white surface, detection up to 140cm can be possible.  With a porous flat black surface like ESD foam used to package ICs, the maximum range may be reduced to as low as 25cm.

We illuminated one of our high performance TSL260 IR Light sensors with one of these modules.  The scope capture is shown below.  It appears that these devices modulate the IR light at a frequency of approximately 490Hz, though this varies a bit from device to device.  This helps to make it immune to natural IR light as well as IR from common sources such as IR remotes that typically operate at 38KHz.

The program below implements a basic setup where the sensor output is monitored and any object detection lights the on-board LED and sends a message to the Serial Monitor Window.

We use pin 9 in the example for the sensor output, but this pin is arbitrary and can be changed as desired.

E18-D80NK Adjustable Infrared Proximity Sensor Module Program

/*
  Exercise E18-D80NK Adjustable Infrared Proximity Sensor

  Basic code to implement obstacle detection.  If an obstacle is detected, you would obviously want
   to implement some type of avoidance rather than simply loop as we do here.
*/
int const LED_PIN = 13;       // On board LED
int const SENSOR_PIN = 9;     // Pin to attach to sensor output
boolean objectDetect = false; // Flag to show whether an object has been detected
//===============================================================================
//  Initialization
//===============================================================================
void setup() {
  pinMode(LED_PIN, OUTPUT);     
  pinMode (SENSOR_PIN, INPUT);   
  Serial.begin(9600);
}
//===============================================================================
//  Main
//===============================================================================
void loop() {
  if ( digitalRead( SENSOR_PIN))        // If detector Output is HIGH, there is no object
  {
    if (objectDetect == true) {         // If we had previously detected an object
      objectDetect = false;             // Set flag to no object detected
      digitalWrite (LED_PIN, LOW);      // Turn LED off if no detection
    }
  }
  else                                 // If the Output is LOW, there is an object detected
  {
    objectDetect = true;               // Set flag
    digitalWrite (LED_PIN, HIGH);      // turn on LED to show the detection.
    Serial.println("Object Detected"); // Also send detection to the serial monitor window
  }
  delay(100);                         // wait for a bit then check again.
}

BEFORE THEY ARE SHIPPED, THESE MODULES ARE:

• Inspected
• Basic obstacle detection operation verified.  Detection range set to about 12″
• Packaged in a high quality resealable ESD bag for protection and easy storage.

Notes: 

1. None

TECHNICAL SPECIFICATIONS