3_4 One Note Piano

One Note Piano

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 on the speaker */ void setup() { pinMode(4,INPUT_PULLUP); //button pinMode(2,OUTPUT); //speaker } void loop() { if(digitalRead(4)==LOW){ //if button 4 is pressed... tone(2,500); //play a tone of 500 hertz on the speaker } else{ //otherwise (if button 4 is not pressed)... noTone(2); //turn off the tone from the speaker } } // (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 tone that plays on the speaker when you press the button.

Add a delay(1000); on a new line after the line of code tone(A5,500); but still inside the curly braces of the “if” statement.

Add an LED that turns on when you press the button to play the tone.