int redpin1 = 10; // select the pin for the red LED1 int yellowpin1 =11; // select the pin for the yelbrightnesssLED1 int greenpin1 = 12; // select the pin for the green LED1 int redpin2 = 5; // select the pin for the red LED1 int yellowpin2 =6; // select the pin for the yelbrightnesssLED1 int greenpin2 = 7; // select the pin for the green LED1 int brightness = 255; void setup() { pinMode(redpin1, OUTPUT); pinMode(yellowpin1, OUTPUT); pinMode(greenpin1, OUTPUT); pinMode(redpin2, OUTPUT); pinMode(yellowpin2, OUTPUT); pinMode(greenpin2, OUTPUT); } void loop() { analogWrite(redpin2, LOW); analogWrite(redpin1, brightness); analogWrite(greenpin2, brightness); delay(10000); analogWrite(greenpin2, LOW); analogWrite(yellowpin2, brightness); delay(10000); analogWrite(yellowpin2, LOW); analogWrite(redpin2, brightness); delay(10000); analogWrite(redpin1, LOW); analogWrite(greenpin1, brightness); delay(10000); analogWrite(greenpin1, LOW); analogWrite(yellowpin1, brightness); delay(10000); analogWrite(yellowpin1, LOW); analogWrite(redpin1, brightness); delay(10000); }