Fade Up a Tone

Code

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/* Fade up the tones on a speaker*/ void setup(){ pinMode(A5,OUTPUT); //speaker } void loop(){ /*create a 'counter' variable starting at 40 and, as long as the variable is less than 1000, run the code between the curly braces, then increase the value of the 'i' variable by 1 */ for(int i = 40; i < 1000; i++){ tone(A5,i); //use the value of 'i' to determine the tone playing on the speaker delay(10); //wait 10 milliseconds (0.01 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) 2021 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?