Automatic Night Lamp

Night lamp using LDR

Aug 28, 2020

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15701 views

•

1 respects

lights

energy efficiency

entertainment system

Components and supplies

LDR, 5 Mohm

12v led light

5V 2.5A Switching Power Supply

Ply Board sticks

Relay Module (Generic)

12v adapter

Jumper wires (generic)

Arduino UNO

Resistor 10k ohm

Apps and platforms

Arduino IDE

Project description

Code

arduino

1// https://www.youtube.com/channel/UCaXI2PcsTlH5g0et67kdD6g  //
2//  Automatic NightLamp //
3// By MOHD SOHAIL //
4
5const int relayPin = 13;  
6const  int ldrPin = A0;  
7
8
9void setup() {
10
11  Serial.begin(9600);
12  pinMode(relayPin,  OUTPUT); 
13  pinMode(ldrPin, INPUT);   
14}
15
16void loop() {
17
18  int  ldrStatus = analogRead(ldrPin);  
19  
20
21   if (ldrStatus <=400) {
22
23    digitalWrite(relayPin, LOW);               
24    Serial.println("LDR is DARK,  LED is ON");
25    
26   }
27  else {
28
29    digitalWrite(relayPin, HIGH);         
30    Serial.println("---------------");
31  }
32}
33

// https://www.youtube.com/channel/UCaXI2PcsTlH5g0et67kdD6g  //
//  Automatic NightLamp //
// By MOHD SOHAIL //

const int relayPin = 13;  
const  int ldrPin = A0;  


void setup() {

  Serial.begin(9600);
  pinMode(relayPin,  OUTPUT); 
  pinMode(ldrPin, INPUT);   
}

void loop() {

  int  ldrStatus = analogRead(ldrPin);  
  

   if (ldrStatus <=400) {

    digitalWrite(relayPin, LOW);               
    Serial.println("LDR is DARK,  LED is ON");
    
   }
  else {

    digitalWrite(relayPin, HIGH);         
    Serial.println("---------------");
  }
}

Downloadable files

Circuit Diagram

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