void setup() {
// configure the output pins
pinMode(2,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);
} void loop()
{
digitalWrite(2,1); //enables the 1st set of signals
digitalWrite(7,1);
digitalWrite(10,1);
digitalWrite(4,0);
digitalWrite(3,0);
digitalWrite(6,0);
digitalWrite(8,0);
digitalWrite(9,0);
digitalWrite(5,0);
delay(5000);
digitalWrite(3,1); //enables the yellow lights
digitalWrite(6,1);
digitalWrite(2,0);
digitalWrite(7,0);
delay(1000);
digitalWrite(4,1); //enables the 2nd set of signals
digitalWrite(5,1);
digitalWrite(10,1);
digitalWrite(2,0);
digitalWrite(3,0);
digitalWrite(6,0);
digitalWrite(8,0);
digitalWrite(9,0);
digitalWrite(7,0);
delay(5000);
digitalWrite(9,1); //enables the yellow lights
digitalWrite(6,1);
digitalWrite(10,0);
digitalWrite(5,0);
digitalWrite(4,0);
delay(1000);
digitalWrite(8,1); //enables the 3rd set of signals
digitalWrite(4,1);
digitalWrite(7,1);
digitalWrite(2,0);
digitalWrite(3,0);
digitalWrite(5,0);
digitalWrite(6,0);
digitalWrite(9,0);
digitalWrite(10,0);
delay(5000);
digitalWrite(9,1); //enables the yellow lights
digitalWrite(3,1);
digitalWrite(7,0);
digitalWrite(8,0);
digitalWrite(4,0);
delay(1000);
}