sensori.txt

SENSORE OSTACOLO

uscita dal pin 2 (quello centrale)
quando passi la mano vicino, il gpio vale 0

SENSORE VIBRAZIONE

uscita dal pin S (quello in cui c'è scritto S)
quando si scuote (MOLTO), il gpio vale 0



SENSORE DI DISTANZA

uscita dal pin out (EN non serve!)
quando si avvicina la mano, il gpio vale 0. Le resistenze variabili cambiano la sensibilità


SENSORE DI LUMINOSITÀ (quello con led nero)

uscita dal pin DO
quando si tocca il led, il gpio vale 0. La resistenza cambia sensibilità (senso orario aumenta)




SENSORE TEMPERATURA

uscita dal pin S

serve questo programma:

void loop(void) {
	byte i;
	byte present = 0;
	byte data[12];
	byte addr[8];
	int Temp;
	if ( !ds.search(addr)) {
		//Serial.print("No more addresses.n");
		ds.reset_search();
		return;
	}

	Serial.print("R="); //R=28 Not sure what this is

	for( i = 0; i < 8; i++) {
		Serial.print(addr[i], HEX);
		Serial.print(" ");
	}

	if ( OneWire::crc8( addr, 7) != addr[7]) {
		Serial.print("CRC is not valid!n");
		return;
	}

	if ( addr[0] != 0x28) {
		Serial.print("Device is not a DS18S20 family device.n");
		return;
	}

	ds.reset();
	ds.select(addr);
	ds.write(0x44,1);
	delay(1000);
	// start conversion, with parasite power on at the end
	// maybe 750ms is enough, maybe not
	// we might do a ds.depower() here, but the reset will take care of it.
	present = ds.reset();
	ds.select(addr);
	ds.write(0xBE);
	// Read Scratchpad
	Serial.print("P=");
	Serial.print(present,HEX);
	Serial.print(" ");
	for ( i = 0; i < 9; i++) {
		// we need 9 bytes
		data[i] = ds.read();
		Serial.print(data[i], HEX);
		Serial.print(" ");
	}
	Temp=(data[1]<<8)+data[0];//take the two bytes from the response relating to temperature
	Temp=Temp>>4;//divide by 16 to get pure celcius readout
	//next line is Fahrenheit conversion
	//Temp=Temp*1.8+32; // comment this line out to get celcius
	Serial.print("T=");//output the temperature to serial port
	Serial.print(Temp);
	Serial.print(" ");
	Serial.print(" CRC=");
	Serial.print( OneWire::crc8( data, 8), HEX);
	Serial.println();
}










SENSORE TEMPERATURA & UMIDITÀ



byte bGlobalErr;
byte dht_dat[5];

void setup(){
	InitDHT();
	Serial.begin(9600);
	delay(300);
	Serial.println("Humidity and temperaturenn");
	delay(700);
}

void loop(){
	ReadDHT();
	switch (bGlobalErr){
		case 0:
		Serial.print("Current humdity = ");
		Serial.print(dht_dat[0], DEC);
		Serial.print(".");
		Serial.print(dht_dat[1], DEC);
		Serial.print("% ");
		Serial.print("temperature = ");
		Serial.print(dht_dat[2], DEC);
		Serial.print(".");
		Serial.print(dht_dat[3], DEC);
		Serial.println("C ");
		break;
		case 1:
		Serial.println("Error 1: DHT start condition 1 not met.");
		break;
		case 2:
		Serial.println("Error 2: DHT start condition 2 not met.");
		break;
		case 3:
		Serial.println("Error 3: DHT checksum error.");
		break;
		default:
		Serial.println("Error: Unrecognized code encountered.");
		break;
	}
	delay(800);
}

void InitDHT(){
pinMode(dht_dpin,OUTPUT);
digitalWrite(dht_dpin,HIGH);
}

void ReadDHT(){
	bGlobalErr=0;
	byte dht_in;
	byte i;
	digitalWrite(dht_dpin,LOW);
	delay(20);
	digitalWrite(dht_dpin,HIGH);
	delayMicroseconds(40);
	pinMode(dht_dpin,INPUT);
	//delayMicroseconds(40);
	dht_in=digitalRead(dht_dpin);
	if(dht_in){
		bGlobalErr=1;
		return;
	}
	delayMicroseconds(80);
	dht_in=digitalRead(dht_dpin);
	if(!dht_in){
		bGlobalErr=2;
		return;
	}

	delayMicroseconds(80);
	for (i=0; i<5; i++)
		dht_dat[i] = read_dht_dat();

	pinMode(dht_dpin,OUTPUT);
	digitalWrite(dht_dpin,HIGH);
	byte dht_check_sum =
	dht_dat[0]+dht_dat[1]+dht_dat[2]+dht_dat[3];
	if(dht_dat[4]!= dht_check_sum)
		{bGlobalErr=3;}
		};


	byte read_dht_dat(){
	byte i = 0;
	byte result=0;
	for(i=0; i< 8; i++){
		while(digitalRead(dht_dpin)==LOW);
			delayMicroseconds(30);
		if (digitalRead(dht_dpin)==HIGH)
			result |=(1<<(7-i));
		while (digitalRead(dht_dpin)==HIGH);
	}
	return result;
}