Fade Up an LED Light

Code

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/* Fade up an LED light from 0-255 brightness*/ void setup(){ pinMode(3,OUTPUT); //LED on an analogWrite pin. Pins 3,5,6, and 9 can use analogWrite } void loop(){ /*create a 'counter' variable with a starting value of 0 and, as long as the variable is less than 256, run the code between the curly braces, then increase the value of i by 1 */ for(int i = 0; i < 256; i++){ analogWrite(3,i); //use the value of 'i' to determine the brightness of LED 3 delay(25); //wait 25 milliseconds (0.025 seconds) before running the 'for' loop again } //Once the 'for' loop has ended, the void loop will start over, resetting the i variable and 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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Concepts

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Quiz

If you're having trouble, try to run an experimental program or look at the example code to help you find the answer.

1. Which syntax ends the entire 'void loop' function?




2. Which syntax ends a single code command?