4_4 Play Random Tones on the Speaker

Play Random Tones

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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Monitor Upload Your Code!

/* Beep random tones on the speaker */ void setup(){ pinMode(2,OUTPUT); //Speaker } void loop(){ tone(2,random(40,1200)); //play a random hertz value from 40 - 1199 on the speaker delay(1000); // delay 1000 milliseconds (1 second) with the tone playing } // (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 delay between the random tones that beep on the speaker. What happens when you make the delay really, really small?

Change the range of tones the random function can ‘choose from’ for the tone it plays each loop. You can make the tone as large or as small as you want.