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Original file line number Diff line number Diff line change
Expand Up @@ -44,15 +44,15 @@ void loop(){
switchstate = digitalRead(2);

// if the button is not pressed
// blink the red LEDs
// turn on the green LED and off the red LEDs
if (switchstate == LOW) {
digitalWrite(3, HIGH); // turn the green LED on pin 3 on
digitalWrite(4, LOW); // turn the red LED on pin 4 off
digitalWrite(5, LOW); // turn the red LED on pin 5 off
}
// this else is part of the above if() statement.
// if the switch is not LOW (the button is pressed)
// the code below will run
// turn off the green LED and blink alternatively the red LEDs
else {
digitalWrite(3, LOW); // turn the green LED on pin 3 off
digitalWrite(4, LOW); // turn the red LED on pin 4 off
Expand Down