# Door Chime randomly going off... **URL:** \ **Category:** IDE 1.x\ **Created:** [May 3, 2018, 3:06pm UTC](https://forum.arduino.cc/t/door-chime-randomly-going-off/523992 "2018-05-03T15:06:23Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Heliman](https://avatars.discourse-cdn.com/v4/letter/h/f1d935/32.png) [@Heliman](https://forum.arduino.cc/u/Heliman)\ **Post date:** [May 3, 2018, 3:06pm UTC](https://forum.arduino.cc/t/door-chime-randomly-going-off/523992/1 "2018-05-03T15:06:23Z")
Hello, I made a door chime using a reed switch and an arduino uno I believe. The door chime randomly goes off at times and I am trying to troubleshoot the problem. It is hooked up to a rather long cable run like prob around 30 to 45ft. Maybe I am getting electromagnetic interference? I will post my code below to see if anyone can spot a problem with it and maybe have a solution to fix it via code. ```cpp /* Rameez Saiyid Reed Switch and Arduino 4.9.15 */ const int switchPin = 5; const int ledPin = 10; // include SPI, MP3 and SD libraries #include #include #include // These are the pins used for the music maker shield #define SHIELD_RESET  -1      // VS1053 reset pin (unused!) #define SHIELD_CS    7      // VS1053 chip select pin (output) #define SHIELD_DCS    6      // VS1053 Data/command select pin (output) // These are common pins between breakout and shield #define CARDCS 4    // Card chip select pin // DREQ should be an Int pin, see http://arduino.cc/en/Reference/attachInterrupt #define DREQ 3      // VS1053 Data request, ideally an Interrupt pin Adafruit_VS1053_FilePlayer musicPlayer =   Adafruit_VS1053_FilePlayer(SHIELD_RESET, SHIELD_CS, SHIELD_DCS, DREQ, CARDCS); void setup() {     pinMode(switchPin, INPUT);   pinMode(ledPin, OUTPUT);   digitalWrite(switchPin, HIGH);   Serial.begin(9600);   Serial.println("Adafruit VS1053 Simple Test");   if (! musicPlayer.begin()) { // initialise the music player     Serial.println(F("Couldn't find VS1053, do you have the right pins defined?"));     while (1);   }   Serial.println(F("VS1053 found"));     SD.begin(CARDCS);    // initialise the SD card     // Set volume for left, right channels. lower numbers == louder volume!   musicPlayer.setVolume(20,20);   } void loop() { if(digitalRead(switchPin) == LOW){ digitalWrite(ledPin, LOW); } else{ digitalWrite(ledPin, HIGH);   // Play one file, don't return until complete   Serial.println(F("Playing track 001"));   musicPlayer.playFullFile("track001.mp3"); delay (2000); while (digitalRead(switchPin) == HIGH) ; // do nothing } } ``` ```cpp / ***************************************************   This is an example for the Adafruit VS1053 Codec Breakout   Designed specifically to work with the Adafruit VS1053 Codec Breakout   ----> https://www.adafruit.com/products/1381   Adafruit invests time and resources providing this open source code,   please support Adafruit and open-source hardware by purchasing   products from Adafruit!   Written by Limor Fried/Ladyada for Adafruit Industries.    BSD license, all text above must be included in any redistribution **************************************************** / // include SPI, MP3 and SD libraries #include #include #include // define the pins used //#define CLK 13      // SPI Clock, shared with SD card //#define MISO 12      // Input data, from VS1053/SD card //#define MOSI 11      // Output data, to VS1053/SD card // Connect CLK, MISO and MOSI to hardware SPI pins. // See http://arduino.cc/en/Reference/SPI "Connections" // These are the pins used for the breakout example #define BREAKOUT_RESET  9      // VS1053 reset pin (output) #define BREAKOUT_CS    10    // VS1053 chip select pin (output) #define BREAKOUT_DCS    8      // VS1053 Data/command select pin (output) // These are the pins used for the music maker shield #define SHIELD_RESET  -1      // VS1053 reset pin (unused!) #define SHIELD_CS    7      // VS1053 chip select pin (output) #define SHIELD_DCS    6      // VS1053 Data/command select pin (output) // These are common pins between breakout and shield #define CARDCS 4    // Card chip select pin // DREQ should be an Int pin, see http://arduino.cc/en/Reference/attachInterrupt #define DREQ 3      // VS1053 Data request, ideally an Interrupt pin Adafruit_VS1053_FilePlayer musicPlayer =   // create breakout-example object!   Adafruit_VS1053_FilePlayer(BREAKOUT_RESET, BREAKOUT_CS, BREAKOUT_DCS, DREQ, CARDCS);   // create shield-example object!   //Adafruit_VS1053_FilePlayer(SHIELD_RESET, SHIELD_CS, SHIELD_DCS, DREQ, CARDCS);   void setup() {   Serial.begin(9600);   Serial.println("Adafruit VS1053 Simple Test");   if (! musicPlayer.begin()) { // initialise the music player     Serial.println(F("Couldn't find VS1053, do you have the right pins defined?"));     while (1);   }   Serial.println(F("VS1053 found"));     SD.begin(CARDCS);    // initialise the SD card     // Set volume for left, right channels. lower numbers == louder volume!   musicPlayer.setVolume(20,20);   // Timer interrupts are not suggested, better to use DREQ interrupt!   //musicPlayer.useInterrupt(VS1053_FILEPLAYER_TIMER0_INT); // timer int   // If DREQ is on an interrupt pin (on uno, #2 or #3) we can do background   // audio playing   musicPlayer.useInterrupt(VS1053_FILEPLAYER_PIN_INT);  // DREQ int     // Play one file, don't return until complete   Serial.println(F("Playing track 001"));   musicPlayer.playFullFile("track001.mp3");   // Play another file in the background, REQUIRES interrupts!   Serial.println(F("Playing track 002"));   musicPlayer.startPlayingFile("track002.mp3"); } void loop() {   // File is playing in the background   if (musicPlayer.stopped()) {     Serial.println("Done playing music");     while (1);   }   if (Serial.available()) {     char c = Serial.read();         // if we get an 's' on the serial console, stop!     if (c == 's') {       musicPlayer.stopPlaying();     }         // if we get an 'p' on the serial console, pause/unpause!     if (c == 'p') {       if (! musicPlayer.paused()) {         Serial.println("Paused");         musicPlayer.pausePlaying(true);       } else {         Serial.println("Resumed");         musicPlayer.pausePlaying(false);       }     }   }   delay(100); } ``` ---
**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\ **Post date:** [May 5, 2021, 4:18pm UTC](https://forum.arduino.cc/t/door-chime-randomly-going-off/523992/2 "2021-05-05T16:18:51Z")