3_9 Four Note Piano

Four Note Code 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.


/* Create a 4 note piano where each of the 4 buttons plays a different tone */ void setup(){ pinMode(4,INPUT_PULLUP);//button pinMode(5,INPUT_PULLUP);//button pinMode(6,INPUT_PULLUP);//button pinMode(7,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 if(digitalRead(5)==LOW){ //otherwise if button 5 is pressed tone(2,700); //play a tone of 700 hertz } else if(digitalRead(6)==LOW){ //otherwise if button 6 is pressed tone(2,900); //play a tone of 900 hertz } else if(digitalRead(7)==LOW){ //otherwise if button 7 is pressed tone(2,1100); //play a tone of 1100 hertz } else{ //otherwise if none of the if-else if statements are true noTone(2); //stop any tones playing on the speaker } } // (c) 2023 Let's Start Coding. License: www.letsstartcoding.com/bsdlicense
 

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!