Published October 16, 2020 © CC0

Reverse Headphones

I took earmuffs and modified it to play the chorus of "Say So" (by Doja Cat) when a button is pressed.

BeginnerFull instructions provided322

Things used in this project

Hardware components

Arduino LilyPad USB

SparkFun LilyPad Buzzer

SparkFun LilyPad Button Board

Battery, 3.7 V

Story

Background

I had a pair of earmuffs lying around, so I wanted to use them to experiment with embedding sound into a soft object. The electronic components of the project are detachable, so the earmuffs can still be worn safely in wet weather.

Materials

Materials for project

LilyPad Protosnap Plus Board

LilyPad Buzzer

LilyPad Button

110mAh LiPo Battery

Conductive thread

Alligator clips (at least 5)

Earmuffs

Large scrap of black fabric

4 metal sew-on snaps

Black thread

White thread

Process

1 / 5 • Prototyping with alligator clips

1. Gather materials

2. Prototype the schematic with alligator clips

3. Cut out five circles out of the black fabric. The circles should be about three inches in diameter, or big enough to fit the LilyPad board and the battery.

4. Secure the LilyPad board on to one of the circles with black thread. Secure the button on to another one of the circles with black thread.

5. Attach the circle with the board and the circle with the button to each other with black thread. The board and the button should be facing outside.

6. Using conductive thread, attach one end of the button to the A4 port on the board. This will be the positive end for the button. For all of the conductive connections, be careful not to let them intersect with each other.

7. Secure two snaps on to another black circle with black thread. Then, line up the snaps so that they're even with the circle with the board and the buzzer. The snaps should be facing outside.

8. Sew the snaps with conductive thread so that one snap is attached to the A3 port on the board and the other snap is attached to the negative port on the board.

9. Attach the battery to the board. Then secure the circles with the board/button and snaps together with black thread, leaving room for the LilyPad USB to charge if needed.

10. Sew the negative end of the button to the snap that goes to the negative port on the board with conductive thread. One side of the detachable components is now done.

10. Secure two snaps on to another black circle with black thread.

11. Secure the buzzer into the middle of the last black circle with black thread.

12. Line up the unattached circle with snaps and the circle with the buzzer so that they're even. The buzzer and the snaps should be facing outside.

13. Sew one of the snaps to the positive end of the buzzer with conductive thread. Sew the other snap to the negative end of the buzzer with conductive thread. The two detachable components are now done.

14. Embroider a plus sign with white thread on to each detachable component, to indicate where the positive charge is flowing. This is so the circuit can be attached properly.

15. Sew the corresponding snaps to the earmuffs. There should be two snaps per earmuff side.

16. Using conductive thread, connect one of the snaps to the other snap across from it on the earmuff. Then, use conductive thread to connect the remaining snaps.

17. Attach everything together, using the plus signs as a guide. Assuming the battery is charged, the earmuffs should then play "Say So".

Final

Video of earmuffs playing

Code

Reverse Headphones ("Say So")

//Say So by Doja Cat

int buzzer = A3;
int buttonPin = A4;

int NOTE_B3 = 247;
int NOTE_C4 = 262;
int NOTE_CS4 = 277;
int NOTE_D4 = 294;
int NOTE_DS4 = 311;
int NOTE_E4 = 330;
int NOTE_F4 = 349;
int NOTE_FS4 = 370;
int NOTE_G4 = 392; 
int NOTE_GS4 = 415;
int NOTE_A4 = 440;
int NOTE_AS4 = 466;
int NOTE_B4 = 494;
int NOTE_C5 = 523;
int NOTE_CS5 = 554;
int NOTE_D5 = 587;
int NOTE_DS5 = 622;
int NOTE_E5 = 659;
int NOTE_F5 = 698;
int NOTE_FS5 = 740;
int NOTE_G5 = 784;
int NOTE_GS5 = 831;
int NOTE_A5 = 880;



//note length here

int whole = 2100;

int sixteenth = whole/16;
int eighth = whole/8;
int quarter = whole/4;
int half = whole/2;
int beat = 15;



void setup()
{
  // Set the buzzer pin to be an output:
  
  pinMode(buttonPin, INPUT_PULLUP);
  pinMode(buzzer, OUTPUT);
}

void loop()
{
  int buttonState;
  int switchState;

  // Read and save the states of the button and switch:

  buttonState = digitalRead(buttonPin);

  if (buttonState == LOW) // Check to see if buttonState is LOW (pressed) 
  {


  //Day to night to morning
  
  tone(buzzer,NOTE_FS4);
  delay(eighth);

  tone(buzzer,NOTE_E4);
  delay(eighth);

  tone(buzzer,NOTE_FS4);
  delay(eighth);

  tone(buzzer,NOTE_E4);
  delay(eighth);

  tone(buzzer,NOTE_FS4);
  delay(eighth);

  tone(buzzer,NOTE_FS4);
  delay(sixteenth);

  tone(buzzer,NOTE_E4);
  delay(eighth);

  noTone(buzzer);
  delay(sixteenth);





//Keep with me in the moment

  tone(buzzer,NOTE_E4);
  delay(eighth);

  noTone(buzzer);
  delay(beat);

  tone(buzzer,NOTE_E4);
  delay(eighth);

  noTone(buzzer);
  delay(beat);

  tone(buzzer,NOTE_E4);
  delay(eighth);

  tone(buzzer,NOTE_FS4);
  delay(eighth);

  tone(buzzer,NOTE_CS4);
  delay(eighth);

  noTone(buzzer);
  delay(beat);

  tone(buzzer,NOTE_CS4);
  delay(eighth);

  tone(buzzer,NOTE_CS4);
  delay(sixteenth);

  tone(buzzer,NOTE_B3);
  delay(eighth);





  //I'd let you had I known it

  noTone(buzzer);
  delay(sixteenth);
  
  tone(buzzer,NOTE_FS4);
  delay(eighth);

  tone(buzzer,NOTE_E4);
  delay(eighth);

  tone(buzzer,NOTE_CS4);
  delay(eighth);

  tone(buzzer,NOTE_E4);
  delay(eighth);

  tone(buzzer,NOTE_CS4);
  delay(eighth);

  tone(buzzer,NOTE_E4);
  delay(eighth);

  tone(buzzer,NOTE_E4);
  delay(sixteenth);

  tone(buzzer,NOTE_CS4);
  delay(eighth);
  





//Why don't you say so?

  noTone(buzzer);
  delay(sixteenth);
  
  tone(buzzer,NOTE_E4);
  delay(eighth);

  noTone(buzzer);
  delay(beat);

  tone(buzzer,NOTE_E4);
  delay(eighth);

  noTone(buzzer);
  delay(beat);

  tone(buzzer,NOTE_E4);
  delay(eighth);

  tone(buzzer,NOTE_FS4);
  delay(quarter);

  tone(buzzer,NOTE_CS4);
  delay(quarter);
  
  noTone(buzzer);
  delay(quarter);





//Didn't even notice

  tone(buzzer,NOTE_FS4);
  delay(eighth);

  tone(buzzer,NOTE_E4);
  delay(eighth);

  tone(buzzer,NOTE_FS4);
  delay(eighth);

  tone(buzzer,NOTE_E4);
  delay(eighth);

  tone(buzzer,NOTE_FS4);
  delay(eighth);

  tone(buzzer,NOTE_FS4);
  delay(sixteenth);

  tone(buzzer,NOTE_E4);
  delay(eighth);

  noTone(buzzer);
  delay(sixteenth);



//No punches left to roll with

  tone(buzzer,NOTE_E4);
  delay(eighth);

  noTone(buzzer);
  delay(beat);

  tone(buzzer,NOTE_E4);
  delay(eighth);

  noTone(buzzer);
  delay(beat);

  tone(buzzer,NOTE_E4);
  delay(eighth);

  tone(buzzer,NOTE_FS4);
  delay(eighth);

  tone(buzzer,NOTE_CS4);
  delay(eighth);

  noTone(buzzer);
  delay(beat);

  tone(buzzer,NOTE_CS4);
  delay(eighth);

  tone(buzzer,NOTE_CS4);
  delay(sixteenth);

  tone(buzzer,NOTE_B3);
  delay(eighth);





  //You've got to keep me focused
  
  noTone(buzzer);
  delay(sixteenth);
  
  tone(buzzer,NOTE_FS4);
  delay(eighth);

  tone(buzzer,NOTE_E4);
  delay(eighth);

  tone(buzzer,NOTE_CS4);
  delay(eighth);

  tone(buzzer,NOTE_E4);
  delay(eighth);

  tone(buzzer,NOTE_CS4);
  delay(eighth);

  tone(buzzer,NOTE_E4);
  delay(eighth);

  tone(buzzer,NOTE_E4);
  delay(sixteenth);

  tone(buzzer,NOTE_CS4);
  delay(eighth);



  //Why don't you say so?

  noTone(buzzer);
  delay(sixteenth);
  
  tone(buzzer,NOTE_E4);
  delay(eighth);

  noTone(buzzer);
  delay(beat);

  tone(buzzer,NOTE_E4);
  delay(eighth);

  noTone(buzzer);
  delay(beat);

  tone(buzzer,NOTE_E4);
  delay(eighth);

  tone(buzzer,NOTE_FS4);
  delay(quarter);

  tone(buzzer,NOTE_CS4);
  delay(quarter);
  
  noTone(buzzer);
  delay(quarter);

}

 else
  {
    digitalWrite(buzzer,LOW); // If buttonState is HIGH (unpressed), turn off the buzzer
  }
}