Infrared Laser Rangefinder Arduino Wiki

Introduction

This is a cost-effective IR laser distance sensor that features high accuracy, long-distance detection, visible IR laser, and small FOV. It offers the measuring ranges 0.05-80m for indoor use and 0.05-50m outdoor. With serial port output, it is compatible with all kinds of controller boards like Arduino. The sensor can be used in applications like UAV automatic landing, electronic scale, barn material level monitoring, etc.

NOTE: for different objects and operating environments, the measurement range of the sensor may be shortened or its performance may be affected due to factors like excessive intensity of ambient light, too high or low operating temperature, rough surface of target, and too weak or strong light reflection of target object.

Specification

Operating Voltage: DC3.3V~5V
Measuring Range: indoor 0.05-50m, outdoor 0.05-80m
Accuracy(Standard Deviation): ±1.0mm
Laser Type: 620~690nm
Laser Class: Ⅱ, <1mW
Spot Diameter at Distance M: 6mm@10m，30mm@50m
Single Measurement Time: 0.05~1s
Protection Level: IP40
Operating Temperature: -10~+60℃
Storage Temperature: -20~+80℃
Weight: about 60g
Dimension: 48×42×18mm/1.89×1.65×0.71”

Board Overview

Board Overview Pin diagram

Tutorial

Requirements

Hardware
- DFRduino UNO R3 (or similar) x 1
- Infrared Laser Distance Sensor（50m/80m） x1
- Wires

Software
- Arduino IDE

Connection Diagram

Sample Code

SEN0366 Communication Protocol.pdf

/*!
 * @File  DFRobot_IraserSensor.ino
 * @brief  In this example, the infrared laser ranging sensor is used to measure the distance, and the sensor data is processed to obtain the measured distance
 * @copyright  Copyright (c) 2010 DFRobot Co.Ltd (http://www.dfrobot.com)
 * @licence  The MIT License (MIT)
 * @author  [liunian](nian.liu@dfrobot.com)
 * @version  V1.0
 * @date  2020-08-13
 */
#include <SoftwareSerial.h>
SoftwareSerial mySerial(2,3);//Define software serial, 3 is TX, 2 is RX
char buff[4]={0x80,0x06,0x03,0x77};
unsigned char data[11]={0};
void setup()
{
 Serial.begin(115200);
 mySerial.begin(9600);
}

void loop()
{
  mySerial.print(buff);
  while(1)
  {
    if(mySerial.available()>0)//Determine whether there is data to read on the serial 
    {
      delay(50);
      for(int i=0;i<11;i++)
      {
        data[i]=mySerial.read();
      }
      unsigned char Check=0;
      for(int i=0;i<10;i++)
      {
        Check=Check+data[i];
      }
      Check=~Check+1;
      if(data[10]==Check)
      {
        if(data[3]=='E'&&data[4]=='R'&&data[5]=='R')
        {
          Serial.println("Out of range");
        }
        else
        {
          float distance=0;
          distance=(data[3]-0x30)*100+(data[4]-0x30)*10+(data[5]-0x30)*1+(data[7]-0x30)*0.1+(data[8]-0x30)*0.01+(data[9]-0x30)*0.001;
          Serial.print("Distance = ");
          Serial.print(distance,3);
          Serial.println(" M");
        }
      }
      else
      {
        Serial.println("Invalid Data!");
      }
    }
    delay(20);
  }
}

FAQ

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Infrared Laser Rangefinder Arduino Wiki - DFRobot