roboforum.ru

   
/*
   Analog Pin 0: microphone
   Digital Pin 3: DC gear reduction motor attached to the lock. (Or a motor controller or a solenoid or other unlocking mechanisim.)
   Digital Pin 5: Green LED.
   
*/

// Pin definitions
const int soundSensor = 0;         // microphone on pin 0.
const int lockMotor = 3;           // Gear motor used to turn the lock.
const int greenLED = 5;            // Status LED

// Tuning constants.  Could be made vars and hoooked to potentiometers for soft configuration, etc.
const int threshold = 550;           // Minimum signal from the microphone to register as a sound.
const int soundFadeTime = 100;     // milliseconds we allow a sound to fade before we listen for another one. (Debounce timer.)
const int lockTurnTime = 300;      // milliseconds that we run the motor to get it to go a half turn.

// Variables.
int soundSensorValue = 0; 


void setup() {
  pinMode(lockMotor, OUTPUT);
  pinMode(greenLED, OUTPUT);
 
  Serial.begin(9600);                        // Uncomment the Serial.bla lines for debugging.
  Serial.println("Program start.");           // but feel free to comment them out after it's working right.
 
  //digitalWrite(greenLED, HIGH);      // Green LED on, everything is go.
}


// Records the sound.
void listenToSound(){
  Serial.println("someone is blowing in"); 

}

// Runs the motor (or whatever) to turn the disc.
void triggerSpinDisc(){
  Serial.println("Disc is spinning!");
 
  // turn the motor on for a bit.
  digitalWrite(lockMotor, HIGH);
  digitalWrite(greenLED, HIGH);            // And the green LED too.
 
  delay (lockTurnTime);                    // Wait a bit.
 
  digitalWrite(lockMotor, LOW);            // Turn the motor off.
 
}

void stopDisc(){
  Serial.println("disc is stopping");
  delay(soundFadeTime);
 
   digitalWrite(lockMotor, LOW);
   digitalWrite(greenLED, LOW);
}

void loop() {
  // Listen for any sound at all.

  soundSensorValue = analogRead(soundSensor);
  Serial.println(soundSensorValue);
 
  if (soundSensorValue >=threshold){
    listenToSound();
    triggerSpinDisc();
  } else {
    stopDisc();
  }
}