theremin

introduction

wikipedia Theremin

program

apri il programma

Arduino

inizia il laboratorio

algorithm

attrezzaggio

pin11˜

_altoparlante

pin9˜

_trigger

pin8

_receiver

variabili

X = 0

duration = 0

distance = 0

ciclo

SWITCH ON (5 Volt) switch on

_trigger

wait 10 milliseconds

SWITCH OFF (0 Volt) switch off

_trigger

in the variable duration put the duration of the pulse on the pin: _receiver

the variable distanza is equal to the formula duration*0.1720

write on the serial: _distanza_(mm)= distanza

wait 100 milliseconds

the variable X is equal to the formula distance*10

write on the serial: _-_-_-_frequenza= X

PLAY the note di frequenza (XHz) duration: 100 milliseconds

Arduino code

//programma: theremin

//******* pin ********

//******* declare ******** 
int X=0;//declares the variable 
const int pin_altoparlante=11;//the longer leg is the positive and goes to pin, the other to GND
const int pin_trigger=9;//pin actuator ultrasuoniE
const int pin_receiver=8;//pin sensorultrasuoniR
int duration=0;//declares the variable 
int distance=0;//declares the variable

//********** setup **********  
   void setup(){ 
	
	pinMode(pin_altoparlante,OUTPUT); 
	pinMode(pin_trigger,OUTPUT); 
	pinMode(pin_receiver,INPUT); 
	 Serial.begin(9600);      // Initialize the serial  
}

//********** loop ********** 
 void loop() { 
	
	digitalWrite(pin_trigger,HIGH); // HIGH/LOW is the voltage 5V/0V)
	delay(10);//attendi 
	digitalWrite(pin_trigger,LOW); // HIGH/LOW is the voltage 5V/0V)
	duration=pulseIn(pin_receiver,HIGH);// Reads a pulse on a pin
	distanza=duration*0.1720; 
	Serial.print("_distanza_(mm)=");//writes on the serial 
	Serial.print(distanza);//writes on the serial 
	delay(100);//attendi 
	X=distance*10; 
	Serial.print("_-_-_-_frequenza=");//writes on the serial 
	Serial.println(X);//writes on the serial 
	tone(pin_altoparlante,X,100);

};//end loop

//powered by "Arduinomio" (C) 
//www.mastrohora.it

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