relay shield v2.1 and DS18b20

Hi,

I´d like some information about relay shield v2.1 bought from dfrobot, that is different from what is announced. By what I noticed, the shield dfrobot sent has some sensor pins (with d, vcc and gnd), and the wiki reference doesn´t mention them (I think it refers to na older version of this shield...).

I am trying to use it with waterproof DS18B20 (also bought from dfrobot), I have set it to digital pin 13, but only appears ""No more adresses." message on serial monitor.

I checked everything 10 times and don´t know what´s wrong, including the fact that I am using a 4.7k resitor between vcc and d.... Maybe is some key that must be set on this relay shield....

Bellow, code used:

[code]#include <OneWire.h>

// DS18S20 Temperature chip i/o
OneWire ds(13); // on pin 13

void setup(void) {
// initialize inputs/outputs
// start serial port
Serial.begin(9600);
}

void loop(void) {
byte i;
byte present = 0;
byte data[12];
byte addr[8];

if ( !ds.search(addr)) {
Serial.print("No more addresses.\n");
ds.reset_search();
return;
}

Serial.print("R=");
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] == 0x10) {
Serial.print("Device is a DS18S20 family device.\n");
}
else if ( addr[0] == 0x28) {
Serial.print("Device is a DS18B20 family device.\n");
}
else {
Serial.print("Device family is not recognized: 0x");
Serial.println(addr[0],HEX);
return;
}

ds.reset();
ds.select(addr);
ds.write(0x44,1); // start conversion, with parasite power on at the end

delay(1000); // 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(" ");
}
Serial.print(" CRC=");
Serial.print( OneWire::crc8( data, 8), HEX);
Serial.println();
}[/code]

Please, let me know what is wrong...

Thanks.