int nLightG = 0; int nLightY = 1; int nLightR = 2; void setup() { // put your setup code here, to run once: pinMode(nLightG, OUTPUT); pinMode(nLightY, OUTPUT); pinMode(nLightR, OUTPUT); } void loop() { // put your main code here, to run repeatedly: digitalWrite(nLightG, HIGH); delay(2000); digitalWrite(nLightG, LOW); digitalWrite(nLightY, HIGH); delay(3000); digitalWrite(nLightY, LOW); digitalWrite(nLightR, HIGH); delay(5000); digitalWrite(nLightR, LOW); digitalWrite(nLightG, HIGH); }