Traffic light algortihm
int RED=5; // define the value for the red LED pin int YELLOW=11; // define the value for the yellow LED pin int GREEN=3; // define the value for the green LED pin void setup() { pinMode(GREEN, OUTPUT); // declare the green pin as output pinMode(YELLOW, OUTPUT); // declare the yellow pin as output pinMode(RED, OUTPUT); // declare the red pin as output } void loop() { digitalWrite(RED, HIGH); // turn on the green LED delay(2000); // wait for 2 seconds digitalWrite(RED, LOW); // turn off the green LED delay(500); // wait for half a second digitalWrite(YELLOW, HIGH); // turn on the yellow LED delay(2000); // wait for 2 seconds digitalWrite(YELLOW, LOW); // turn off the yellow LED delay(500); // wait for half a second digitalWrite(GREEN, HIGH); // turn on the red LED delay(3000); // wait for 2 seconds digitalWrite(GREEN, LOW); // turn off the red LED delay(500); // wait for half a second }
