Hand Wash for 20 seconds

In this project we will use two LEDs and one push button to make this Arduino project. Enjoy !

May 27, 2021

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home automation

Components and supplies

5 mm LED: Red

Arduino UNO

Resistor 220 ohm

Jumper wires (generic)

Solderless Breadboard Full Size

Tactile Switch, Top Actuated

5 mm LED: Green

Apps and platforms

Arduino IDE

Project description

Code

The Code

csharp

1const int buttonPin = 2;  
2
3int buttonState = 0;      
4
5void   setup() {
6  pinMode(buttonPin, INPUT);
7}
8
9void loop() {
10  
11  buttonState   = digitalRead(buttonPin);
12
13  if (buttonState == HIGH) {
14    
15    digitalWrite(13,   HIGH);
16    digitalWrite(12, LOW);
17    delay(20000);
18    digitalWrite(12,   HIGH);
19    digitalWrite(13, LOW);
20    delay(1000);
21    digitalWrite(12,   LOW);
22  } else {
23  
24    digitalWrite(12, LOW);
25    digitalWrite(13,   LOW);
26  }
27}

const int buttonPin = 2;  

int buttonState = 0;      

void   setup() {
  pinMode(buttonPin, INPUT);
}

void loop() {
  
  buttonState   = digitalRead(buttonPin);

  if (buttonState == HIGH) {
    
    digitalWrite(13,   HIGH);
    digitalWrite(12, LOW);
    delay(20000);
    digitalWrite(12,   HIGH);
    digitalWrite(13, LOW);
    delay(1000);
    digitalWrite(12,   LOW);
  } else {
  
    digitalWrite(12, LOW);
    digitalWrite(13,   LOW);
  }
}

The Code

csharp

1const int buttonPin = 2;  
2
3int buttonState = 0;      
4
5void  setup() {
6  pinMode(buttonPin, INPUT);
7}
8
9void loop() {
10  
11  buttonState  = digitalRead(buttonPin);
12
13  if (buttonState == HIGH) {
14    
15    digitalWrite(13,  HIGH);
16    digitalWrite(12, LOW);
17    delay(20000);
18    digitalWrite(12,  HIGH);
19    digitalWrite(13, LOW);
20    delay(1000);
21    digitalWrite(12,  LOW);
22  } else {
23  
24    digitalWrite(12, LOW);
25    digitalWrite(13,  LOW);
26  }
27}

const int buttonPin = 2;  

int buttonState = 0;      

void  setup() {
  pinMode(buttonPin, INPUT);
}

void loop() {
  
  buttonState  = digitalRead(buttonPin);

  if (buttonState == HIGH) {
    
    digitalWrite(13,  HIGH);
    digitalWrite(12, LOW);
    delay(20000);
    digitalWrite(12,  HIGH);
    digitalWrite(13, LOW);
    delay(1000);
    digitalWrite(12,  LOW);
  } else {
  
    digitalWrite(12, LOW);
    digitalWrite(13,  LOW);
  }
}

Downloadable files

The Schematic

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