int ledPin2=2;
int ledPin3=3;
int ledPin4=4;
int ledPin5=5;
int ledPin6=6;
int ledPin7=7;
int ledPin8=8;
int ledPin9=9;
void setup() {
//define all pins as output pins
pinMode(ledPin2,OUTPUT);
pinMode(ledPin3,OUTPUT);
pinMode(ledPin4,OUTPUT);
pinMode(ledPin5,OUTPUT);
pinMode(ledPin6,OUTPUT);
pinMode(ledPin7,OUTPUT);
pinMode(ledPin8,OUTPUT);
pinMode(ledPin9,OUTPUT);
}
void loop() {
//switch led's on one at a time
digitalWrite(ledPin2, HIGH);
delay(1000);
digitalWrite(ledPin3, HIGH);
delay(1000);
digitalWrite(ledPin4, HIGH);
delay(1000);
digitalWrite(ledPin5, HIGH);
delay(1000);
digitalWrite(ledPin6, HIGH);
delay(1000);
digitalWrite(ledPin7, HIGH);
delay(1000);
digitalWrite(ledPin8, HIGH);
delay(1000);
digitalWrite(ledPin9, HIGH);
delay(2000);
//switch led's off one at a time
digitalWrite(ledPin2, LOW);
delay(1000);
digitalWrite(ledPin3, LOW);
delay(1000);
digitalWrite(ledPin4, LOW);
delay(1000);
digitalWrite(ledPin5, LOW);
delay(1000);
digitalWrite(ledPin6, LOW);
delay(1000);
digitalWrite(ledPin7, LOW);
delay(1000);
digitalWrite(ledPin8, LOW);
delay(1000);
digitalWrite(ledPin9, LOW);
delay(2000);
}