Kit per una scultura vivente

KIT PER UNA SCULTURA VIVENTE

materiale occorrente

arduino uno

wave shield for arduino

materiale occorrente

arduino breadboard

arduino cavetti

materiale occorrente

accelerometro

scheda sd

1gb

materiale occorrente

cavo usb dati

/alimentazione

computer

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http://arduino.cc/en/Main/Software

http://code.google.com/p/wavehc/downloads/list

http://ge.tt/48uU96E?c

materiale occorrente

casse non alimentate

cavo di alimentazione daV batteria

batteria

9v

9v

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cartone pressato

4mm

matita cutter

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trapano punte da ferro

spago

materiale occorrente

portavasi zincato socker ikea diametro

27cm

http://www.ikea.com/it/it/catalog/products/30155670/

materiale occorrente

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1.

Download

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Installazione Software Arduino

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librerie

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7.

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A B C D E D C

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B A

E

9.

Aprire un nuovo sketch

*

codice

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Codice*

/* * Adafruit SampleRateMod.pde example modified to use WaveHC. * * Play files with sample rate controlled by voltage on analog pin zero. */ #include <WaveHC.h> #include <WaveUtil.h> SdReader card; // This object holds the information for the card FatVolume vol; // This holds the information for the partition on the card FatReader root; // This holds the information for the volumes root directory FatReader file; // This object represent the WAV file WaveHC wave; // This is the only wave (audio) object, since we will only play one at a time /* * Define macro to put error messages in flash memory */ #define error(msg) error_P(PSTR(msg)) //////////////////////////////////// SETUP void setup() { Serial.begin(9600); Serial.println(“Wave test!”); // try card.init(true) if errors occur on V1.0 Wave Shield if (!card.init()) { error(“Card init. failed!”); } // enable optimize read - some cards may timeout card.partialBlockRead(true); if (!vol.init(card)) { error(“No partition!”); }

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}

if (!root.openRoot(vol)) { error(“Couldn’t open root”); } putstring_nl(“Files found:”); root.ls();

// forward declarition void playcomplete(FatReader &file); //////////////////////////////////// LOOP void loop() { uint8_t i, r; char c, name[15]; dir_t dir; root.rewind(); // scroll through the files in the directory while (root.readDir(dir) > 0) { // only play .WAV files if (!strncmp_P((char *)&dir.name[8]. PSTR(“WAV”))) continue; if (!file.open(vol, dir)){ putstring(“Can’t open “); printEntryName(dir); Serial.println(); continue; } putstring(“\n\rPlaying “); printEntryName(dir); Serial.println(); playcomplete(file); file.close();

} } /////////////////////////////////// HELPERS /* * print error message and halt */ void error_P(const char *str) { PgmPrint(“Error: “);

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SerialPrint_P(str); sdErrorCheck(); while(1);

} /* * print error message and halt if SD I/O error, great for debugging! */ void sdErrorCheck(void) { if (!card.errorCode()) return; PgmPrint(“\r\nSD I/O error: “); Serial.print(card.errorCode(), HEX); PgmPrint(“, “); Serial.println(card.errorData(), HEX); while(1); } int16_t lastpotval = 0; #define HYSTERESIS 3 /* * play file with sample rate changes */ void playcomplete(FatReader &file) { int16_t potval; uint32_t newsamplerate; if (!wave.create(file)) { putstring_nl(“ Not a valid WAV”); return; } // ok time to play! wave.play(); while (wave.isplaying) { potval = analogRead(0); if ( ((potval - lastpotval) > HYSTERESIS) || ((lastpotval - potval) > HYSTERESIS)) { putstring(“pot = “); Serial.println(potval, DEC); putstring(“tickspersam = “); Serial.print(wave.dwSamplesPerSec, DEC); putstring(“ -> “); newsamplerate = wave.dwSamplesPerSec; newsamplerate *= potval;

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newsamplerate /= 512; // we want to ‘split’ between sped up and slowed down. if ((potval > 330) && (potval < 350)) { //potval legge il valore x dell’accelerometro newsamplerate = 24000; // se l’acc. è fermo allora fa partire il file wave wave.play(); Serial.print(potval, DEC); } else { // altrimenti se si inclina a destra o sinistra si interrompe newsamplerate = 1000; //24000; wave.pause(); Serial.print(potval, DEC); } wave.setSampleRate(newsamplerate); Serial.println(newsamplerate, DEC); lastpotval = potval;

} delay(100);

}

} sdErrorCheck();

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11.

Upload

Spegnere il computer, scollegare il cavo usb.

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8 CM X 12 0,5 CM

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