IDUINO DEBO SENS TEMP4 Datasheet

IDUINO for maker’s life

User Manual

for

DS18B20 Temperature Sensor for Arduino(SE042)

1 Introduction

There are so many kinds of temperature sensor module for arduino, different
temperature sensor chip has different sense range and specification, this module use
the DS18B20 chip, the feature as below:

 Temperature measuring range: -55 ~ +125 ℃
 Temperature measurement accuracy: 0.5 ℃
 Resolution adjustment range:9-12byte
 Working voltage: DC 5V

www.openplatform.cc

IDUINO for maker’s life

Pin

Description

S

Digital output pin

V

Power pin

G

Ground

2 Pinout

3. Example

This example shows you the environment temperature in the serial window.
The connection as below:

V---------5V

G---------Ground

S---------D10

********Code Begin********

#include <OneWire.h>

int inPin=10; // define D10 as input pin connecting to DS18S20 S pin

OneWire ds(inPin);

void setup(void) {

Serial.begin(9600);

}

void loop(void) {

int HighByte, LowByte, TReading, SignBit, Tc_100, Whole, Fract;

byte i;

byte present = 0;

byte data[12];
byte addr[8];

if ( !ds.search(addr)) {

ds.reset_search();

return;
}

www.openplatform.cc

IDUINO for maker’s life

ds.reset();

ds.select(addr);

ds.write(0x44,1);

delay(1000);

present = ds.reset();
ds.select(addr);

ds.write(0xBE);

for ( i = 0; i < 9; i++) {

data[i] = ds.read();

}

Serial.print("Temperature: ");

LowByte = data[0];
HighByte = data[1];

TReading = (HighByte << 8) + LowByte;

SignBit = TReading & 0x8000;

if (SignBit)

{
TReading = (TReading ^ 0xffff) + 1;

}

Tc_100 = (6 * TReading) + TReading / 4;

Whole = Tc_100 / 100;

Fract = Tc_100 % 100;
if (SignBit)

{

Serial.print("-");

}

Serial.print(Whole);
Serial.print(".");

if (Fract < 10)

{

Serial.print("0");

}
Serial.print(Fract);

Serial.print(" C\n");

}

********Code End********

www.openplatform.cc