Temperature sensor module KY-001 for Arduino

2.60$

Description

DESCRIPTION

Temperature sensor module KY-001 for Arduino:

The sensor on this module is DS18B20 that this module is already mounted with the resistor in the circuit. The module has pin 1 (-) to ground, pin 2 to 5V and pin 3 (S) to the digital sensor input on the Arduino.

PACKAGE CONTENT

1 x Temperature sensor module KY-001

Example Code:

 

#include <OneWire.h>

// DS18S20 Temperature chip i/o
OneWire ds(10);  // on pin 10

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

void loop() {

  //For conversion of raw data to C
  int HighByte, LowByte, TReading, SignBit, Tc_100, Whole, Fract;

  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();

  //Conversion of raw data to C
  LowByte = data[0];
  HighByte = data[1];
  TReading = (HighByte << 8) + LowByte;
  SignBit = TReading & 0x8000;  // test most sig bit
  if (SignBit) { // negative
    TReading = (TReading ^ 0xffff) + 1; // 2's comp
  }
  Tc_100 = (6 * TReading) + TReading / 4;    // multiply by (100 * 0.0625) or 6.25

  Whole = Tc_100 / 100;  // separate off the whole and fractional portions
  Fract = Tc_100 % 100;

  if (SignBit) { // If its negative
     Serial.print("-");
  }
  Serial.print(Whole);
  Serial.print(".");
  if (Fract < 10) {
     Serial.print("0");
  }
  Serial.print(Fract);

  Serial.print("n");
  //End conversion to C
}

 

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