EXP 1 simple LED Bar Graph using Arduino.

Coding:

void setup() { 

pinMode(13, OUTPUT);

 pinMode(12, OUTPUT); 

pinMode(11, OUTPUT);

 pinMode(10, OUTPUT); 

pinMode(9, OUTPUT); 

pinMode(8, OUTPUT);

}

void loop() 

{ 

digitalWrite(8, HIGH); 

delay(1000); 

digitalWrite(9, HIGH); 

delay(1000); 

digitalWrite(10, HIGH); 

delay(1000); 

digitalWrite(11, HIGH); 

delay(1000);

 digitalWrite(12, HIGH);

 delay(1000); 

digitalWrite(13, HIGH); 

delay(1000); 

digitalWrite(8, LOW); 

delay(1000); 

digitalWrite(9, LOW); 

delay(1000); 

digitalWrite(10, LOW); 

delay(1000); 

digitalWrite(11, LOW);

 delay(1000);

 

digitalWrite(12, LOW);

 delay(1000); 

digitalWrite(13,LOW); 

delay(1000);

}