Light Magic: Using LM393 and Arduino UNO

Automatic light control using a photosensitive LDR sensor module and Arduino.

Jul 18, 2019

•

41526 views

•

6 respects

Components and supplies

Jumper wires (generic)

Breadboard (generic)

LED (generic)

Resistor 221 ohm

Arduino UNO

LM393 Light-Dependent Resistor (LDR)

Apps and platforms

Arduino IDE

Project description

Code

Code_LDR

arduino

1void setup() {
2  pinMode(8,INPUT);
3  pinMode(9,OUTPUT);
4  Serial.begin(9600);  //initialise serial monitor
5
6}
7
8void loop() {
9  int temp=digitalRead(8);      //assign value of LDR sensor to a temporary variable
10  Serial.println("Intensity=");  //print on serial monitor using ""
11  Serial.println(temp);         //display  output on serial monitor
12  delay(300);
13  if(temp==HIGH)               //HIGH  means,light got blocked
14  digitalWrite(9,HIGH);        //if light is not present,LED  on
15  else
16  digitalWrite(9,LOW);         //if light is present,LED off
17}

void setup() {
  pinMode(8,INPUT);
  pinMode(9,OUTPUT);
  Serial.begin(9600);  //initialise serial monitor

}

void loop() {
  int temp=digitalRead(8);      //assign value of LDR sensor to a temporary variable
  Serial.println("Intensity=");  //print on serial monitor using ""
  Serial.println(temp);         //display  output on serial monitor
  delay(300);
  if(temp==HIGH)               //HIGH  means,light got blocked
  digitalWrite(9,HIGH);        //if light is not present,LED  on
  else
  digitalWrite(9,LOW);         //if light is present,LED off
}

Downloadable files

Circuit diagram

Comments

Only logged in users can leave comments

kiranpaul

0 Followers

•

0 Projects

Intro

Trademarks & CopyrightsWhistleblowingDigital Services ActTerms of ServicePrivacy PolicySecurityCookie Settings

Report content