LED Blinking Patterns

Solving Approach

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Code

//pattern-1
int led1=3;
int led2=4;
int led3=5;
int led4=6;

void setup(){
  pinMode(led1,OUTPUT);
  pinMode(led2,OUTPUT);
  pinMode(led3,OUTPUT);
  pinMode(led4,OUTPUT);
}
void loop(){
  digitalWrite(led1,HIGH);
  digitalWrite(led2,HIGH);
  digitalWrite(led3,HIGH);
  digitalWrite(led4,HIGH);
  delay(1000);
  digitalWrite(led1,LOW);
  digitalWrite(led2,LOW);
  digitalWrite(led3,LOW);
  digitalWrite(led4,LOW);
  delay(1000);
}

// pattern-2
int led1=3;
int led2=4;
int led3=5;
int led4=6;

void setup(){
  pinMode(led1,OUTPUT);
  pinMode(led2,OUTPUT);
  pinMode(led3,OUTPUT);
  pinMode(led4,OUTPUT);
}
void loop(){
  digitalWrite(led1,HIGH);
  digitalWrite(led2,LOW);
  digitalWrite(led3,HIGH);
  digitalWrite(led4,LOW);
  delay(1000);
  digitalWrite(led1,LOW);
  digitalWrite(led2,HIGH);
  digitalWrite(led3,LOW);
  digitalWrite(led4,HIGH);
  delay(1000);
}
//pattern-3
int led1=3;
int led2=4;
int led3=5;
int led4=6;

void setup(){
  pinMode(led1,OUTPUT);
  pinMode(led2,OUTPUT);
  pinMode(led3,OUTPUT);
  pinMode(led4,OUTPUT);
}
void loop(){
  digitalWrite(led1,HIGH);
  delay(200);
  digitalWrite(led1,LOW);
  digitalWrite(led2,HIGH);
  delay(200);
  digitalWrite(led2,LOW);
  digitalWrite(led3,HIGH);                    
  delay(200);
  digitalWrite(led3,LOW);
  digitalWrite(led4,HIGH);
  delay(200);
  digitalWrite(led4,LOW);
  delay(200);
}

//pattern-4
int led1=3;
int led2=4;
int led3=5;
int led4=6;

void setup(){
  pinMode(led1,OUTPUT);
  pinMode(led2,OUTPUT);
  pinMode(led3,OUTPUT);
  pinMode(led4,OUTPUT);
}
void loop(){
  digitalWrite(led1,HIGH);
  digitalWrite(led2,HIGH);
  digitalWrite(led3,LOW);
  digitalWrite(led4,LOW);
  delay(1000);
  digitalWrite(led1,LOW);
  digitalWrite(led2,LOW);
  digitalWrite(led3,HIGH);
  digitalWrite(led4,HIGH);
  delay(1000);
}
//pattern-5
int led1=3;
int led2=4;
int led3=5;
int led4=6;

void setup(){
  pinMode(led1,OUTPUT);
  pinMode(led2,OUTPUT);
  pinMode(led3,OUTPUT);
  pinMode(led4,OUTPUT);
}
void loop(){
  digitalWrite(led1,HIGH);
  digitalWrite(led2,LOW);
  digitalWrite(led3,LOW);
  digitalWrite(led4,HIGH);
  delay(1000);
  digitalWrite(led1,LOW);
  digitalWrite(led2,HIGH);
  digitalWrite(led3,HIGH);
  digitalWrite(led4,LOW);
  delay(1000);
}
  

Output

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