void setup() { pinMode(2, OUTPUT); // sets the digital pin as output pinMode(3, OUTPUT); pinMode(4, OUTPUT); pinMode(5, OUTPUT); pinMode(6, OUTPUT); pinMode(7, OUTPUT); pinMode(8, OUTPUT); pinMode(9, OUTPUT); pinMode(10, OUTPUT); pinMode(11, OUTPUT); } void loop() { digitalWrite(2, LOW); digitalWrite(3, LOW); digitalWrite(4, LOW); digitalWrite(5, LOW); digitalWrite(6, LOW); digitalWrite(7, HIGH); digitalWrite(8, HIGH); digitalWrite(9, HIGH); digitalWrite(10, HIGH); digitalWrite(11, HIGH); for (int y=7; y <= 11; y++) { digitalWrite(y, LOW); for (int x=2; x <= 6; x++) { digitalWrite(x, HIGH); delay(100); digitalWrite(x, LOW); delay(10); } digitalWrite(y, HIGH); } }