1_4 Beep 3 Tones on the Speaker

Beep 3 Tones on the Speaker

Code

The code in the editor below is ready to run! Plug Code Lab Mini in to your computer's USB port with the cable and hit 'Upload Your Code!' to see what it does. Change something in the code, like a delay or pin number. Try to add something new to the program - it's yours to tinker with! You can always press the 'Restore' button to return the code to the working example.

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/* Play three tones on the speaker, on repeat*/ void setup(){ pinMode(2,OUTPUT); //Set the speaker as an OUTPUT } void loop(){ tone(2,500); //Play a tone of 500 hertz on pin 2 delay(1000); //Delay 1000 milliseconds (1 second) tone(2,700); //Play a tone of 700 hertz delay(1000); //Delay 1000 milliseconds tone(2,900); //Play a tone of 900 hertz delay(1000); //Delay 1000 milliseconds before starting the loop code again } // (c) 2023 Let's Start Coding. License: www.letsstartcoding.com/bsdlicense

 

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Compile errors:

Serial port monitor: Input: Send Close

 

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 challenges? 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.