xXarduino_11Xx
Published © GPL3+

Internet Temperature Station

A fun project that allows you to monitor the temperature from anywhere in your home.

IntermediateFull instructions provided748
Internet Temperature Station

Things used in this project

Story

Read more

Schematics

The schematic

Code

The code

Arduino
#include <SPI.h>
#include <Ethernet.h>
#include <OneWire.h>
#include <DallasTemperature.h>

#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);
// MAC address for shield
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};
EthernetServer server(80); // Using port 80

void setup(void) {
  sensors.begin();

  Ethernet.begin(mac); // Start the Ethernet shield
  server.begin();
  Serial.begin(9600); // Start serial communication
  Serial.println("Server address:"); // Print server address
  // (Arduino shield)
  Serial.println(Ethernet.localIP());
}
void loop(void) {
  sensors.begin();
  sensors.requestTemperatures(); // Send the command to get temperatures
  EthernetClient client = server.available();
  if (client) {
    boolean currentLineIsBlank = true;
    String buffer = "";
    while (client.connected()) {
      if (client.available()) {
        char c = client.read(); // Read from the Ethernet shield
        buffer += c; // Add character to string buffer
        // Client sent request, now waiting for response
        if (c == '\n' && currentLineIsBlank) {
          sensors.requestTemperatures(); // Send the command to get temperatures
          client.println("HTTP/1.1 200 OK"); // HTTP response
          client.println("Content-Type: text/html");
          client.println(); // HTML code
          client.print("<center><br><h1>Current room temperature: ");
          client.print(sensors.getTempCByIndex(0));
          client.print(" C </h1><br><br><br><FORM>");
          client.print("<P> <INPUT type=\"submit\" name=\"status\" value=\"Update temeprature\">");
          client.print("</FORM></center>");

          break;
        }
        if (c == '\n') {
          currentLineIsBlank = true;
          buffer = "";
        }
        else if (c == '\r') { // Command from webpage
          // Did the on button get pressed
          if (buffer.indexOf("GET /?status=Update temprature") >= 0)
             sensors.requestTemperatures(); // Send the command to get temperatures
         
        }
        else {
          currentLineIsBlank = false;
        }
      }
    }
    client.stop(); // End server
  }
}

Credits

xXarduino_11Xx

xXarduino_11Xx

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