Pressing a different buttons to play a tone using the buzzer

Projects Programming
1

Hello! I'm trying to have the Arduino buzzer play a different tone depending on if 1 of three buttons are pressed. I'm having trouble with the loop as currently only the 1st button plays a tone when pressed while buttons 2 and 3 do not. I know the wiring is correct as individually the buttons work, so I think it's something with my code!:

const int button = 9; //buzzer to arduino pin 9
const int button2 = 10;
const int button3 = 11;

void setup(){

pinMode(button, OUTPUT); // Set buzzer - pin 9 as an output
pinMode(button2, OUTPUT);
pinMode(button3, OUTPUT);

}

void loop(){
int buttonstate = digitalRead(button);
int button2state = digitalRead(button2);
int button3state = digitalRead(button3);

if (buttonstate == LOW) { //if button 1 is pressed, play a tone at 1000HZ
  Serial.println("Button 1 is being pressed");
  tone(button, 1000);
  
  if (buttonstate == HIGH && button2state == LOW && button3state == HIGH) { // if button 2 is pressed and button 1 and 3 aren't play a tone at 500HZ
    Serial.println("Button 2 is being pressed");
    tone(button2, 500);
    
    if (buttonstate == HIGH && button2state == HIGH && button3state == LOW) { // if button 3 is pressed and button 1 and 2 aren't play a tone at 250HZ
      Serial.println("Button 3 is being pressed");
      tone(button3, 250);
    }
  }
} 
else { //No sound is played if a button isn't pressed
 noTone(button);
 noTone(button2);
 noTone(button3);
}

}

2

Please post your code using code tags.

The code below is an obvious problem: You have the if statements nested so the conditions for the last 2 if statements can never be met because buttonstate is LOW when those conditions are tested.

if (buttonstate == LOW) { //if button 1 is pressed, play a tone at 1000HZ
  Serial.println("Button 1 is being pressed");
  tone(button, 1000);
  
  if (buttonstate == HIGH && button2state == LOW && button3state == HIGH) { // if button 2 is pressed and button 1 and 3 aren't play a tone at 500HZ
    Serial.println("Button 2 is being pressed");
    tone(button2, 500);
    
    if (buttonstate == HIGH && button2state == HIGH && button3state == LOW) { // if button 3 is pressed and button 1 and 2 aren't play a tone at 250HZ
      Serial.println("Button 3 is being pressed");
      tone(button3, 250);
    }
  }
}

I would recommend else if statements.

3

I would like to see your wiring because you are using pins 9,10, and 11 for both input and output!

Can't possibly be working that way...

4

looks like all your cases are conditional on your first button and sub-conditional statement within that condition are defeated because they are conditioned on buttonState == HIGH

5

Ahh ok thank you!

6

Post your latest code and we'll go from there.

7

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.