1_1 Single Beep the Speaker

Single Speaker Beep

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 a tone one time. Unplug and replug your power cable to hear it again! */ void setup(){ pinMode(2,OUTPUT); //Set pin 2 to receive power tone(2,400); //Send a tone of 400 hertz (hz) to the speaker delay(1000); //Delay 1000 milliseconds (1 second) with the tone playing noTone(2); //Turn off any tones playing } void loop(){} //Nothing in the loop, so no code will repeat // (c) 2023 Let's Start Coding. License: www.letsstartcoding.com/bsdlicense

 

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Success!

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!

Update the delay for your beep. What's the smallest delay where you can still hear the tone?

Change the second number inside the tone( ) function to play a different pitch on the speaker. Don't forget to upload the code to hear it beep!

Add two slashes (//) to the left of the line of code that has the noTone( ) function to see what happens.