9_9 LEDs "Up and Back"

LEDs "Up and Back"

Code

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/* Turn on a row of LEDs, then turn them off in reverse order */ void setup(){ //Set up all of your LEDs pinMode(8,OUTPUT); pinMode(9,OUTPUT); pinMode(10,OUTPUT); pinMode(11,OUTPUT); pinMode(12,OUTPUT); } void loop(){ /*create a variable named i that has a starting value of 8. Until i equals 12, run the code between the curly braces, then increase the value of the 'i' variable by 1*/ for(int i=8;i<13;i++){ digitalWrite(i,HIGH);//turn on the LED whose port number is equal to 'i' delay(500); //wait 500 milliseconds (0.5 seconds) with the LED on before running the 'for' loop again } /*create a variable named i that has a starting value of 12. Until i equals 8, run the code between the curly braces, then decrease the value of the 'i' variable by 1*/ for(int i=12;i>7;i--){ digitalWrite(i,LOW); //turn off whichever LED's port number is equal to 'i' delay(500); //wait 500 milliseconds (0.5 seconds) with the LED off before running the 'for' loop again } } // (c) 2023 Let's Start Coding. License: www.letsstartcoding.com/bsdlicense
 

Walkthrough Video

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Challenges

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