/*Use a rising variable for the tone on a speaker*/
int pitch = 40; //Create a variable called 'pitch' that is an integer (whole number) and has a starting value of 40
void setup() {
pinMode(2,OUTPUT); //speaker
}
void loop() {
tone(2,pitch); //use the pitch variable as the hertz value playing on the speaker
pitch++; //increase the value of the pitch variable by 1
delay(1000); //delay 1000 milliseconds (1 second) before starting the loop again
}
// (c) 2023 Let's Start Coding. License: www.letsstartcoding.com/bsdlicense
It looks like your computer isn't set up to code yet.
Success!
Compile errors:
Serial port monitor:
Input:
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!
Concepts
These are the new code concepts covered in this example program. To become a great coder, read through these concepts to learn new vocabulary.
Quiz
If you're having trouble, try to run an experimental program or look at the example code to help you find the answer.
1. Which syntax ends the entire 'void loop' function?