Play 3 Tones to the Speaker

Code

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/* Play three tones on the speaker, on repeat*/ void setup(){ pinMode(A5,OUTPUT); //Set port A5 to receive power } void loop(){ tone(A5,500); //Play a tone of 500 hertz on port A5 delay(1000); //Delay 1000 milliseconds (1 second) tone(A5,700); //Play a tone of 700 hertz delay(1000); //Delay 1000 milliseconds tone(A5,900); //Play a tone of 900 hertz delay(1000); //Delay 1000 milliseconds before starting the loop code again } // (c) 2021 Let's Start Coding. License: www.letsstartcoding.com/bsdlicense

Walkthrough Video

Watch the video for a line-by-line explanation of how the example program works. Then you'll be ready to make some changes of your own!

Challenges

Can you complete the challenge? Change the code in your code editor above. Upload your code to see the effect when you're finished. Complete a challenge? Check it off the list!

Change the argument inside each delay function to make the tones play faster or slower. What's the fastest you can play the three tones and still hear each one?

Play a fourth tone that plays for 1000 milliseconds.

Stop the tones at the end of the loop and delay 5000 milliseconds before the loop starts over. Hint: You'll need to use the noTone( ) function.

Concepts

These are the new code concepts covered in this example program. To become a great coder, read through these concepts to learn new vocabulary.

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?

semicolon ;
parentheses )
closing curly brace }

2. Which syntax ends a single code command?

semicolon ;
closing curly brace }
period .

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