Multiple-one wire

Use of Dallas Temperature sensor – DS18

By connect 2 one wire together , via D4 terminal

temperature range -55 to 125’c

// Include the libraries we need
#include <OneWire.h>
#include <DallasTemperature.h>// Data wire is plugged into port 2 on the Arduino
#define ONE_WIRE_BUS 2// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
OneWire oneWire(ONE_WIRE_BUS);// Pass our oneWire reference to Dallas Temperature.
DallasTemperature sensors(&oneWire);/*
* The setup function. We only start the sensors here
*/
void setup(void)
{
// start serial port
Serial.begin(115200);
Serial.println("Dallas Temperature IC Control Library Demo");// Start up the library
sensors.begin();
}/*
* Main function, get and show the temperature
*/
void loop(void)
{
// call sensors.requestTemperatures() to issue a global temperature
// request to all devices on the bus
Serial.print("Requesting temperatures...");
sensors.requestTemperatures(); // Send the command to get temperatures
Serial.println("DONE");
// After we got the temperatures, we can print them here.
// We use the function ByIndex, and as an example get the temperature from the first sensor only.
Serial.print("Temperature for the device 1 (index 0) is: ");
Serial.println(sensors.getTempCByIndex(0));
Serial.print("Temperature for the device 2 (index 1) is: ");
Serial.println(sensors.getTempCByIndex(1));
}


 

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