/* Press a button to double the pitch of Buzz's chirp */
int pitch = 40; //create a variable named 'pitch' that is an integer (whole number)
void setup(){
pinMode(2,OUTPUT); //speaker
pinMode(13,INPUT_PULLUP); //button
}
void loop(){
tone(2,pitch); //play a hertz value equal to 'pitch' on the speaker
if(digitalRead(13)==LOW){ //If button 13 is pressed
pitch=pitch*2; // Double the pitch variable. With no delays, pitch will rise quickly!
delay(100); //a delay keeps the pitch from immediately going out of hearing range
}
if(pitch>10000){ //If pitch is greater than 10,000...
pitch=40; //reset the variable to 40 so the scale can start again
}
}
// (c) 2023 Let's Start Coding. License: www.letsstartcoding.com/bsdlicense
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Quiz
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1. Which syntax ends the entire 'void loop' function?
