Lesson 69: Infrared Proximity Sensor E18-D80NK | Arduino Step By Step Course
Part 7: Obstacle Avoidance with Arduino
In this lesson we learn how to use infrared proximity sensor E18-D80NK using Arduino. the module is explained, wiring diagram shown and wiring is explained. Code is fully explained and demonstrated.

- 00:00 Introduction
- 01:20 Code Explained
- 03:21 Wiring Explained
- 04:27 Demonstration
/*
* S08-01
* Lesson 69: Proximity Sensor E18-D80NK with Arduino
* This is the Arduino code for EL18-D80NK Infrared Obstacle Avoidance Sensor
This code is to use E18-D80NK Infrared Sensor to detect obstacle and trigger an
event like starting or stopping motor or servo or relay or anything else.
Watch instruction video for this code: https://youtu.be/bu0LHgXq7Pw
* *
// Writeen by Ahmad Shamshiri for Robojax.com on
// on Feb 22, 2018 at 20:50 at city of Ajax, Ontario, Canada
* Disclaimer: this code is "AS IS" and for indivitual educational purpose only.
*
This video is part of Arduino Step by Step Course which starts here: https://youtu.be/-6qSrDUA5a8
If you found this tutorial helpful, please support me so I can continue creating
content like this. You can support me on Patreon http://robojax.com/L/?id=63
or make donation using PayPal http://robojax.com/L/?id=64
* This code is "AS IS" without warranty or liability. Free to be used as long as you keep this note intact.*
* This code has been download from Robojax.com
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
the Wiring:
Brown: 5V DC
Blue: GNG
Black: Signal, to PIN 2
*
*/
#define SENSOR 2 // define pint 2 for sensor
#define ACTION 9 // define pin 9 as for ACTION
/*
* Permission granted to share this code given that this
* note is kept with the code.
* Disclaimer: this code is "AS IS" and for educational purpose only.
*
*/
void setup() {
// E18-D80NK Obstacle Sensor Code by Robojax.com 2018022
Serial.begin(9600);// setup Serial Monitor to display information
pinMode(SENSOR, INPUT_PULLUP);// define pin as Input sensor
pinMode(ACTION, OUTPUT);// define pin as OUTPUT for ACTION
}
void loop() {
// E18-D80NK Obstacle Sensor Code by Robojax.com 2018022
int L =digitalRead(SENSOR);// read the sensor
if(L == LOW){
Serial.println(" Obstacle detected");
digitalWrite(ACTION,HIGH);// send singal
}else{
Serial.println(" === All clear");
digitalWrite(ACTION,LOW);// turn the relay OFF
}
delay(500);
// E18-D80NK Obstacle Sensor Code by Robojax.com 2018022
}