Overview
Things
Story

Step 1: Gather Stuff
Step 2: Assemble
Step 3 Upload The Code
Support

Published August 15, 2017 © GPL3+

Simple Obstacle Sensor with Arduino

I am going to show you how to make a simple obstacle sensing system with cheap parts like IR LED and photo diode.

BeginnerFull instructions provided15 minutes36,614

Things used in this project

Hardware components

IR transmitter (generic)

Photo Diode

Arduino UNO

3k resistor

150 ohm resistor

Breadboard (generic)

Jumper wires (generic)

LED (generic)

Software apps and online services

Arduino IDE

Story

Step 1: Gather Stuff

Stuff you are gonna need:

Arduino

150 ohms resistor

3k ohms resistor

IR LED

Photodiode

jumpers

breadboard

LEDs

Step 2: Assemble

IR LED Anode => 150 ohms resistor => 5v

IR Cathode => GND

PhotoDiode Anode => GND

PhotoDiode Cathode => 3k ohms resistor => D2

PhotoDiode Cathode => A0

Green LED => D13

Red LED => D12

Step 3 Upload The Code:

Upload the code given. See my other projects:

Thank You!

Support:

Please support me by Going to Instructables and voting my Work. Without your work I can't keep on making stuff.

Vote For Me!

https://www.instructables.com/id/How-to-Make-Remote-Controlled-Bulb-With-Arduino/

https://www.instructables.com/id/How-to-Make-a-Parabolic-Microphone-With-an-Old-TV-/

https://www.instructables.com/id/How-to-Make-Secret-Drawer-Alarm/

Code

Code

int photoDiode=2;                      
int GreenLed=13;                     
int senRead=0;                  
int SenseRate=905;                   
 void setup()    
 {  
  pinMode(photoDiode,OUTPUT);  
  pinMode(GreenLed,OUTPUT);
  pinMode(12,OUTPUT);
  digitalWrite(photoDiode,HIGH);       
  digitalWrite(GreenLed,LOW);      
  Serial.begin(9600);           
 }  
 void loop()  
 {  
  int val=analogRead(senRead);    
  Serial.println(val);            
  if(val <= SenseRate)               
  {
   digitalWrite(12,HIGH);  
   digitalWrite(GreenLed,LOW);       
   delay(20);  
  }  
  else if(val > SenseRate)            
  {  
   digitalWrite(12,LOW);
   digitalWrite(GreenLed,HIGH);       
   delay(20);  
  }  
 }

Credits

muhammed shameel k.v

0 projects • 11 followers

I am a great at electronics. I have programming knowledge and some projects of my own

Simple Obstacle Sensor with Arduino