Published April 8, 2021 © LGPL

How to make Timer switches

BeginnerFull instructions provided1,954

Things used in this project

Hardware components

Arduino UNO

Push button

5 volt Relay

10k Resistor

Jumper wires (generic)

Story

In this Project, I show you, how to create timer switches for AC load. These switches can be used for Light bulb, water pump, fan etc. in this project I use five push buttons. Four buttons for timer and one for ON/OFF. When we press first button it switch ON AC load and when we press again, it switch OFF the the AC load. And when we press second button, it switch ON AC load for 30 minutes. When we press third button, it switch ON AC load for 20 minutes. When we press fourth button, it switch ON AC load for 10 minutes and when we press fifth button, it switch ON AC load for 5 minutes. You can change the timer value from the code.For making this project I am using:-

1- Arduino Uno

2- Five Push buttons

3- Five 10k Resistors

4- Jumper wires

5- 5 volt Relay

Code

int Relay = 12;
int btn1 = 4;
int btn2 = 5;
int btn3 = 6;
int btn4 = 7;
int btn5 = 8;

int relay1 = LOW;

void setup(){
pinMode(Relay,OUTPUT);
pinMode(btn1,INPUT);
pinMode(btn2,INPUT);
pinMode(btn3,INPUT);
pinMode(btn4,INPUT);
pinMode(btn5,INPUT);
}

void loop()
{
if(digitalRead(btn1) == HIGH)
{
digitalWrite(Relay,HIGH);
delay(300000);                   // 5 min
digitalWrite(Relay,LOW);
}
else if(digitalRead(btn2) == HIGH)
{
digitalWrite(Relay,HIGH);
delay(600000);                   // 10 min              
digitalWrite(Relay,LOW);
}
else if(digitalRead(btn3) == HIGH)
{
digitalWrite(Relay,HIGH);
delay(1200000);                  // 20 min , 20x1000x60
digitalWrite(Relay,LOW);
}
else if(digitalRead(btn4) == HIGH)
{
digitalWrite(Relay,HIGH);
delay(1800000);                 // 30 min
digitalWrite(Relay,LOW);
}
else if(digitalRead(btn5) == HIGH)
{
relay1 = ~ relay1;             // ON/OFF
digitalWrite(Relay,relay1);
delay(500);
}

}

Credits

Muhammad_Munir

77 projects • 48 followers

I am Arduino programmer, also expertise in ESP32 and 8266 wifi modules.

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How to make Timer switches

How to make Timer switches

Things used in this project

Hardware components

Story

Code

Code

Credits

Muhammad_Munir

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