Arduino speaker

• Speaker

• Arduino uno

• Sd card reader module

• Jumper wire

• Sd card

• Sd card adapter

• Positive pin of speaker to digital pin 9

• CS pin to digital pin 4

• MOSI pin to digital pin 11

• SCK pin to digital pin 13

• MISO pin to digital pin 12

#include <SD.h> //include SD module library

#include <TMRpcm.h> //include speaker control library

#define SD_ChipSelectPin 4 //define CS pin

TMRpcm tmrpcm; //crete an object for speaker library

void setup(){

tmrpcm.speakerPin = 9; //define speaker pin.

//you must use pin 9 of the Arduino Uno and Nano

//the library is using this pin

if (!SD.begin(SD_ChipSelectPin)) { //see if the card is present and can be initialized

return; //don't do anything more if not

}

tmrpcm.setVolume(6); //0 to 7. Set volume level

tmrpcm.play("test.wav"); //the sound file "test" will play each time the arduino powers up, or is reset

}

void loop(){}