Electronic Wind Bell

• Porteur du projet : xiaohan guo user
• Fichiers utiles : mettre un lien vers un code ou un fichier

Create a enelctronic device with anenometer connected to arduino. Arduino drives several Mp3 readers.

Case :

• Nowind : no mp3 reading
• Little wind : few mp3 play - low audio volume
• Medium wind : more mp3 play - medium audio volume
• Little wind : allmp3 play - max audio volume

• Maya Dunietz, “Thicket” http://www.mayadunietz.com/new-gallery-12
• Erik Samakh

• Arduino
• wind sensor (anemometer)
• mp3 player (arduino) +sd https://github.com/salvadorrueda/SerialMP3Player
• amplifier
• Speakers
• Battery

Un code pour débuter :
On branche l'anemometre en A0 (avec resistance en pont diviseur de tension entre le A0 et GND).
Et un buzzer en D9.

void setup() {
  // initialize serial communication at 9600 bits per second:
  Serial.begin(9600);
    pinMode(LED_BUILTIN, OUTPUT);
}
 
// the loop routine runs over and over again forever:
void loop() {
  // read the input on analog pin 0:
  float sensorValue = analogRead(A0);
  // print out the value you read:
sensorValue = sensorValue/1024;
sensorValue = sensorValue* -1 + 1;
sensorValue = sensorValue*10*1024;  // la valeur est basse (ajuster la resistance ou booster le voltage) pourrait ameliorer la resolution.
 
  Serial.println(sensorValue);
  delay(1);        // delay in between reads for stability
 
  if (sensorValue > 50) {
 tone(9, sensorValue*10, 50);
  delay(50);
}
else {
 tone(9, 0, 10);
 delay(120);
}
}

#include "SerialMP3Player.h"
#define TX 11  // tx en fait
#define RX 10  // rx en fait
SerialMP3Player mp3(RX,TX);
 
// the setup routine runs once when you press reset:
void setup() {
  // initialize serial communication at 9600 bits per second:
  Serial.begin(9600);
  mp3.begin(9600);        // start mp3-communication
  delay(500);             // wait for init
 
  mp3.sendCommand(CMD_SEL_DEV, 0, 2);   //select sd-card
  delay(500);             // wait for init
}
 
// the loop routine runs over and over again forever:
void loop() {
  // read the input on analog pin 0:
  float sensorValue = analogRead(A0);
  // print out the value you read:
sensorValue = sensorValue/1024;
sensorValue = sensorValue* -1 + 1;
sensorValue = sensorValue*10*1024;
 
  Serial.println(sensorValue);
  delay(1);        // delay in between reads for stability
 
  if (sensorValue > 100) {
 mp3.play();     // Play "hello.mp3". You must hear "Hello World"
  mp3.setVol(sensorValue/10);
  delay(10);
}
else {
 mp3.stop();     // Play "hello.mp3". You must hear "Hello World"
 delay(10);
}
}

Code pour afficher les images du projet :

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