4_6 Random Tones and Delays

Random Tones and Random Delays

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 with a random delay between each tone */ 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(random(50,2000)); // random delay from 50-1999 milliseconds between each tone } // (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 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 range of random values the tone function can use.

Change the range of random values that the delay function can use.

Add a noTone function with 2 as the argument and another random delay function so the tone will be ‘off’ for a random period of time.