3_1 Press For Sound

Press a Button to Start a Tone

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.

Restore 12 14 18 24 30

Monitor Upload Your Code!

//Press a button to play a tone void setup(){ pinMode(2,OUTPUT); //Speaker pinMode(4,INPUT_PULLUP); //Button } void loop(){ if(digitalRead(4)==LOW){ //If the button reading is LOW (the button is pressed) tone(2,600); //Play a tone of 600 hertz } //You have to unplug Code Lab Mini to get the tone to stop! } // (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!

Change which button starts the tone playing.

Change the tone that plays from 600 hertz to 60 hertz. Can you still hear it?