Arduino ThinSpeak Měření teploty ze čtyř míst

[Ondra78]

Jak už napovídá název tématu, můj projekt řeší měření teploty ze čtyř míst a logování hodnot na web .
Co k tomu potřebujeme: Arduino, Ethernet shield (W5100), snímač teploty DS18B20.
Zapojené je to takhle
[url=http://postimg.org/image/bhouqm85x/][img]http://s2.postimg.org/bhouqm85x/obrazek1.jpg[/img][/url]

A ve skutečnosti na desce

A ještě odkaz na můj kanál na ThingSpeak

A ještě kód

/*

 Arduino --> ThingSpeak Channel via Ethernet
 
 The ThingSpeak Client sketch is designed for the Arduino and Ethernet.
 This sketch updates a channel feed with an analog input reading via the
 ThingSpeak API (http://community.thingspeak.com/documentation/)
 using HTTP POST. The Arduino uses DHCP and DNS for a simpler network setup.
 The sketch also includes a Watchdog / Reset function to make sure the
 Arduino stays connected and/or regains connectivity after a network outage.
 Use the Serial Monitor on the Arduino IDE to see verbose network feedback
 and ThingSpeak connectivity status.
 
 Getting Started with ThingSpeak:
 
   * Sign Up for New User Account - https://www.thingspeak.com/users/new
   * Register your Arduino by selecting Devices, Add New Device
   * Once the Arduino is registered, click Generate Unique MAC Address
   * Enter the new MAC Address in this sketch under "Local Network Settings"
   * Create a new Channel by selecting Channels and then Create New Channel
   * Enter the Write API Key in this sketch under "ThingSpeak Settings"
 
 Arduino Requirements:
 
   * Arduino with Ethernet Shield or Arduino Ethernet
   * Arduino 1.0 IDE
   
  Network Requirements:

   * Ethernet port on Router    
   * DHCP enabled on Router
   * Unique MAC Address for Arduino
 
 Created: October 17, 2011 by Hans Scharler (http://www.iamshadowlord.com)
 
 Additional Credits:
 Example sketches from Arduino team, Ethernet by Adrian McEwen

updated by Rick Klink to read DS18B20 temperatures and upload to thingspeak
updated by Ondrej Gottwald to read 4 DS18B20 temperatures and upload to thingspeak

 
*/
#include <OneWire.h>
#include <DallasTemperature.h>
#include <SPI.h>
#include <Ethernet.h>

// Local Network Settings
byte mac[] = { 0xD4, 0x28, 0xB2, 0xFF, 0xD5, 0x63 }; // Must be unique on local network

// ThingSpeak Settings
char thingSpeakAddress[] = "api.thingspeak.com";
//**********************************************
// Tady zadejte writeAPIkey získaný z ThingSpeak
//**********************************************
String writeAPIKey = "XXXXXXXXXXXXXXXX";  
 
const int updateThingSpeakInterval = 30 * 1000;      // Time interval in milliseconds to update ThingSpeak (number of seconds * 1000 = interval)

// Variable Setup
long lastConnectionTime = 0; 
boolean lastConnected = false;
int failedCounter = 0;

// Initialize Arduino Ethernet Client
EthernetClient client;

// Data wire is plugged into pin 3 on the Arduino
#define ONE_WIRE_BUS 3
#define TempRes 10  // set the resolution to 10 bit (resolution for ds18b20 9, 10, 11, 12)

// Setup a oneWire instance to communicate with any OneWire devices
OneWire oneWire(ONE_WIRE_BUS);
// Pass our oneWire reference to Dallas Temperature. 
DallasTemperature sensors(&oneWire);
// Assign the addresses of 1-Wire temp sensors.
                                                                                 // Tady zadejte vlastni adresy cidel DS18B20
DeviceAddress RedTemp = { 0x28, 0xD2, 0xCA, 0xF3, 0x00, 0x00, 0x00, 0xD2 };      // ruda,   adresa: 0x28, 0xD2, 0xCA, 0xF3, 0x00, 0x00, 0x00, 0xD2
DeviceAddress YellowTemp = {  0x28, 0x7E, 0x22, 0xF9, 0x03, 0x00, 0x00, 0xE8 };  // zluta,  adresa: 0x28, 0x7E, 0x22, 0xF9, 0x03, 0x00, 0x00, 0xE8
DeviceAddress BlueTemp = {  0x28, 0x37, 0xBF, 0x50, 0x03, 0x00, 0x00, 0x6A };    // modra,  adresa: 0x28, 0x37, 0xBF, 0x50, 0x03, 0x00, 0x00, 0x6A
DeviceAddress GreenTemp = {  0x28, 0xBC, 0x28, 0xF9, 0x03, 0x00, 0x00, 0xA4 };   // zelena, adresa: 0x28, 0xBC, 0x28, 0xF9, 0x03, 0x00, 0x00, 0xA4

void setup()
{
  // Start Serial for debugging on the Serial Monitor
  Serial.begin(9600);
  
  // Start Ethernet on Arduino
  startEthernet();
  sensors.begin();
  // set the resolution to TempRes value
  sensors.setResolution(RedTemp, TempRes);
  sensors.setResolution(YellowTemp, TempRes);
  sensors.setResolution(BlueTemp, TempRes);
  sensors.setResolution(GreenTemp, TempRes);
}

void loop(void)
{
  // Read value from Analog Input Pin 0
  //String analogPin0 = String(analogRead(A0), DEC);
  
  // Print Update Response to Serial Monitor
  if (client.available())
  {
    char c = client.read();
    Serial.print(c);
  }

  // Disconnect from ThingSpeak
  if (!client.connected() && lastConnected)
  {
    Serial.println("...disconnected");
    Serial.println();
    
    client.stop();
  }
  
  //******************
  //Print Temperatures
  //******************
  Serial.print("Getting temperatures...\n\r");
  sensors.requestTemperatures();
  float RT = sensors.getTempC(RedTemp);  //float = xx,xx ; int = xx
  Serial.print("Red Temp is: "); 
  Serial.print(RT);
  Serial.print("C: ");
  Serial.print("\n\r");
  float YT = sensors.getTempC(YellowTemp); //float = xx,xx ; int = xx
  Serial.print("Yellow Temp is: "); 
  Serial.print(YT);
  Serial.print("C: ");
  Serial.print("\n\r"); 
  float BT = sensors.getTempC(BlueTemp); //float = xx,xx ; int = xx
  Serial.print("Blue Temp is: "); 
  Serial.print(BT);
  Serial.print("C: ");
  Serial.print("\n\r");
  float GT = sensors.getTempC(GreenTemp);  //float = xx,xx ; int = xx
  Serial.print("Green Temp is: "); 
  Serial.print(GT);
  Serial.print("C: ");
  Serial.print("\n\r"); 
  
  // Update ThingSpeak
  if(!client.connected() && (millis() - lastConnectionTime > updateThingSpeakInterval))
  {
  updateThingSpeak("field1="+String(RT, DEC)+"&field2="+String(YT, DEC)+"&field3="+String(BT, DEC)+"&field4="+String(GT, DEC));
  }
  
  // Check if Arduino Ethernet needs to be restarted
  if (failedCounter > 3 ) {startEthernet();}
  
  lastConnected = client.connected();
}

void updateThingSpeak(String tsData)
{
  if (client.connect(thingSpeakAddress, 80))
  {         
    client.print("POST /update HTTP/1.1\n");
    client.print("Host: api.thingspeak.com\n");
    client.print("Connection: close\n");
    client.print("X-THINGSPEAKAPIKEY: "+writeAPIKey+"\n");
    client.print("Content-Type: application/x-www-form-urlencoded\n");
    client.print("Content-Length: ");
    client.print(tsData.length());
    client.print("\n\n");

    client.print(tsData);
    
    lastConnectionTime = millis();
    
    if (client.connected())
    {
      Serial.println("Connecting to ThingSpeak...");
      Serial.println();
      
      failedCounter = 0;
    }
    else
    {
      failedCounter++;
  
      Serial.println("Connection to ThingSpeak failed ("+String(failedCounter, DEC)+")");   
      Serial.println();
    }
    
  }
  else
  {
    failedCounter++;
    
    Serial.println("Connection to ThingSpeak Failed ("+String(failedCounter, DEC)+")");   
    Serial.println();
    
    lastConnectionTime = millis(); 
  }
}

void startEthernet()
{
  
  client.stop();

  Serial.println("Connecting Arduino to network...");
  Serial.println();  

  delay(1000);
  
  // Connect to network amd obtain an IP address using DHCP
  if (Ethernet.begin(mac) == 0)
  {
    Serial.println("DHCP Failed, reset Arduino to try again");
    Serial.println();
  }
  else
  {
    Serial.println("Arduino connected to network using DHCP");
    Serial.println();
  }
  
  delay(1000);
}

[Ondra78]

[terje]

Ahoj ,funguje to perfektně. Díky. Nemohl bys poradit ,jak to rozjet se síťovým modulem (Arduino Mini Ethernet modul – ENC28J60) jsem stáhl, vložil do programu, ale na webu se nezobrazují hodnoty.Hardvéru celkem rozumím, ale programování ne.

[terje]

http://www.santy.cz/moduly-c22/ethernet-arduino-mega-uno-2560-1280-328-hr911105a-online-sd-enc28j60-mini-i146/

[Ondra78]

Tady je kanál kam to chodí z ENC28J60

Tady je kód:

[code]

/*
| Post temp. values from a DS18B20 to ThingSpeak using the Ethercard interface based on the 
| ENC28J60 chip.
| Based on the Ethercard example from www.jeelabs.org
| Phil Grant Jan 2014
*/
#include <EtherCard.h>
// change these settings to match your own setup
#define APIKEY  "KVWMM6N5UOKA7SR4"  // ThingSpeak Chanel 21973
#include <Wire.h>
#include <OneWire.h>
#include <DallasTemperature.h> //DS18B20 support
// =========== Setup the Temperature sensor details =================
#define ONE_WIRE_BUS 7  // DS18B20 Temperature chip i/o on pin D7
#define TEMPERATURE_PRECISION 9
// 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);
// Insert the ID of your temp sensor here, for the sketch, visit here
// http://www.hacktronics.com/Tutorials/arduino-1-wire-address-finder.html
DeviceAddress Thermometer = {  0x28, 0xBC, 0x28, 0xF9, 0x03, 0x00, 0x00, 0xA4 };   // zelena, adresa: 0x28, 0xBC, 0x28, 0xF9, 0x03, 0x00, 0x00, 0xA4

int sensorPin = A0;            // select the input pin for the ldr
unsigned int sensorValue = 0;  // variable to store the value coming from the ldr
  
  
// ethernet interface mac address, must be unique on the LAN
byte mymac[] = { 0xDE,0xAD,0xBE,0xEF,0xFE,0xED };

const char website[] PROGMEM = "api.thingspeak.com";

byte Ethernet::buffer[700];
uint32_t timer;
Stash stash;

void setup () {
  Serial.begin(57600);
  Serial.println("\n[webClient]");

  if (ether.begin(sizeof Ethernet::buffer, mymac) == 0) 
    Serial.println( "Failed to access Ethernet controller");
  if (!ether.dhcpSetup())
    Serial.println("DHCP failed");

  ether.printIp("IP:  ", ether.myip);
  ether.printIp("GW:  ", ether.gwip);  
  ether.printIp("DNS: ", ether.dnsip);  

  if (!ether.dnsLookup(website))
    Serial.println("DNS failed");
    
  ether.printIp("SRV: ", ether.hisip);
}

void loop () {
  ether.packetLoop(ether.packetReceive());
  
  if (millis() > timer) {
    //timer = millis() + 60000; //Transmit every 60 seconds
    timer = millis() + 30000; //Transmit every 30 seconds
    sensors.requestTemperatures();
    delay(200);
    // read the value from the ldr:
    sensorValue = analogRead(sensorPin);  
    // generate two values - by using a separate stash,
    // we can determine the size of the generated message ahead of time
    byte sd = stash.create();
    stash.print("field1=");
    stash.println(String(sensors.getTempC(Thermometer),DEC)); // print the temperature as string
    stash.print("&field2=");
    stash.print(String(sensorValue, DEC));     // print the value (0 to 1024) as string
    stash.save();
    // For DEBUGGING - Print out our data, uncomment the lines below
    //Serial.print("field1=");
    //Serial.println(sensors.getTempC(Thermometer),DEC);
    //Serial.print("field2=");
    //Serial.println(sensorValue, DEC);     // print the value (0 to 1024)
    
    // generate the header with payload - note that the stash size is used,
    // and that a "stash descriptor" is passed in as argument using "$H"
    Stash::prepare(PSTR("POST /update HTTP/1.1" "\r\n" 
                        "Host: $F" "\r\n" 
                        "Connection: close" "\r\n" 
                        "X-THINGSPEAKAPIKEY: $F" "\r\n" 
                        "Content-Type: application/x-www-form-urlencoded" "\r\n" 
                        "Content-Length: $D" "\r\n" 
                        "\r\n" 
                        "$H"),
            website, PSTR(APIKEY), stash.size(), sd);

    // send the packet - this also releases all stash buffers once done
    ether.tcpSend();
  }
}

[/code]

[Ondra78]

Dával jsem to dohromady před půl rokem.

[terje]

Díky, zkouším to. Zastaví se mi to na řádku byte Ethernet::buffer[700];
Hlásí to expected initializer before buffer

[Ondra78]

[terje]

neumím do příspěvku vložit obrázek. už jsem zkoušel všecho možné

[Ondra78]

Já vkládám obrázky přes http://postimage.org/

[terje]

Skončil jsem na tomhle.

[url=http://postimg.org/image/yexblf1y3/][img]http://s17.postimg.org/yexblf1y3/Bez_n_zvu.jpg[/img][/url]

[terje]

http://s17.postimg.org/4pfzypacf/Bez_n_zvu.png

[Ondra78]

Postni sem kód

[terje]

/*
| Post temp. values from a DS18B20 to ThingSpeak using the Ethercard interface based on the
| ENC28J60 chip.
| Based on the Ethercard example from http://www.jeelabs.org
| Phil Grant Jan 2014
*/
#include <EtherCard.h>
// change these settings to match your own setup
#define APIKEY „KVWMM6N5UOKA7SR4“ // ThingSpeak Chanel 21973
#include <Wire.h>
#include <OneWire.h>
#include <DallasTemperature.h> //DS18B20 support
// =========== Setup the Temperature sensor details =================
#define ONE_WIRE_BUS 7 // DS18B20 Temperature chip i/o on pin D7
#define TEMPERATURE_PRECISION 9
// 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);
// Insert the ID of your temp sensor here, for the sketch, visit here
// http://www.hacktronics.com/Tutorials/arduino-1-wire-address-finder.html
DeviceAddress Thermometer = { 0x28, 0xBC, 0x28, 0xF9, 0x03, 0x00, 0x00, 0xA4 }; // zelena, adresa: 0x28, 0xBC, 0x28, 0xF9, 0x03, 0x00, 0x00, 0xA4

int sensorPin = A0; // select the input pin for the ldr
unsigned int sensorValue = 0; // variable to store the value coming from the ldr

// ethernet interface mac address, must be unique on the LAN
byte mymac[] = { 0xDE,0xAD,0xBE,0xEF,0xFE,0xED };

const char website[] PROGMEM = „api.thingspeak.com“;

byte Ethernet::buffer[700];
uint32_t timer;
Stash stash;

void setup () {
Serial.begin(57600);
Serial.println(„\n[webClient]“);

if (ether.begin(sizeof Ethernet::buffer, mymac) == 0)
Serial.println( „Failed to access Ethernet controller“);
if (!ether.dhcpSetup())
Serial.println(„DHCP failed“);

ether.printIp(„IP: „, ether.myip);
ether.printIp(„GW: „, ether.gwip);
ether.printIp(„DNS: „, ether.dnsip);

if (!ether.dnsLookup(website))
Serial.println(„DNS failed“);

ether.printIp(„SRV: „, ether.hisip);
}

void loop () {
ether.packetLoop(ether.packetReceive());

if (millis() > timer) {
//timer = millis() + 60000; //Transmit every 60 seconds
timer = millis() + 30000; //Transmit every 30 seconds
sensors.requestTemperatures();
delay(200);
// read the value from the ldr:
sensorValue = analogRead(sensorPin);
// generate two values – by using a separate stash,
// we can determine the size of the generated message ahead of time
byte sd = stash.create();
stash.print(„field1=“);
stash.println(String(sensors.getTempC(Thermometer),DEC)); // print the temperature as string
stash.print(„&field2=“);
stash.print(String(sensorValue, DEC)); // print the value (0 to 1024) as string
stash.save();
// For DEBUGGING – Print out our data, uncomment the lines below
//Serial.print(„field1=“);
//Serial.println(sensors.getTempC(Thermometer),DEC);
//Serial.print(„field2=“);
//Serial.println(sensorValue, DEC); // print the value (0 to 1024)

// generate the header with payload – note that the stash size is used,
// and that a „stash descriptor“ is passed in as argument using „$H“
Stash::prepare(PSTR(„POST /update HTTP/1.1“ „\r\n“
„Host: $F“ „\r\n“
„Connection: close“ „\r\n“
„X-THINGSPEAKAPIKEY: $F“ „\r\n“
„Content-Type: application/x-www-form-urlencoded“ „\r\n“
„Content-Length: $D“ „\r\n“
„\r\n“
„$H“),
website, PSTR(APIKEY), stash.size(), sd);

// send the packet – this also releases all stash buffers once done
ether.tcpSend();
}
}

[marh]

arduino nano+DS18B20+enc28j60
enc28j60 CS pin je na arduine 8
senzory sa daju upraviť ine ale ak vyhodnotenie merania je ine tak treba len upraviť kod na zistenie hodnoty na senzore

pozri tu, teraz nie je napojene meranie , je to len stara historia
https://thingspeak.com/channels/38430

arduino 2x 1-wire bus 4x ds18b20 thingspeak
4sensory 2x na pine 6 a 2x pine 7 —môžete dať všetky štyri na jeden Pin a zmeniť kod
dal som na 2 piny kvôli parazitnym väzbam na dlhom kabli, lebo nemeralo vždy
arduino načita teploty z Pinu 6/7
samozrejme treba upraviť kod:
pridať adresy čisiel, môžete si zmeniť nazvy a zadať kľuč pre THINGSPEAK

/*
| 
| arduino nano, 4x sensor ds18b20 on PIN6/PIN7 , used is 2x 1-wire bus
| arduino program 1.6.4
| Post 4 temperatures  from a DS18B20 to ThingSpeak using the Ethercard interface based on the 
| ENC28J60 chip. ethercard      <EtherCard.h> from master
| Based on the Ethercard example from www.jeelabs.org

| enc28j60 CS is pin 8
| library ethercard from master   , ethercardmaster.zip
| Phil Grant Jan 2014

*/
#include <EtherCard.h>
// change these settings to match your own setup
#define APIKEY  "C06FVBVE5DCU0UK1 "   // plug your API KEY
#include <Wire.h>
#include <OneWire.h>
#include <DallasTemperature.h> //DS18B20 support
// =========== Setup the Temperature sensor details =================

#define TEMPERATURE_PRECISION 9
// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
OneWire oneWireA (6) ; // 2 sensor on pin6
OneWire oneWireB (7) ; // 2 sensor on pin7 
// Pass our oneWire reference to Dallas Temperature. 

DallasTemperature sensorsA (&oneWireA) ;
DallasTemperature sensorsB (&oneWireB) ;
// Insert the ID of your temp sensor here, for the sketch, visit here
// http://www.hacktronics.com/Tutorials/arduino-1-wire-address-finder.html
DeviceAddress inside = { 0x28, 0xFF, 0x1F, 0x8A, 0x4E, 0x04, 0x00, 0x67 };
DeviceAddress outside = { 0x28, 0xFF, 0x03, 0x4A, 0x33, 0x04, 0x00, 0xFC };
DeviceAddress dogHouse = { 0x28, 0xFF, 0xE2, 0x44, 0x31, 0x04, 0x00, 0xB1 };
DeviceAddress cathouse = { 0x28, 0xFF, 0xED, 0x89, 0x4E, 0x04, 0x00, 0xCA };

// ethernet interface mac address, must be unique on the LAN
byte mymac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };

const char website[] PROGMEM = "api.thingspeak.com";

byte Ethernet::buffer[700];
uint32_t timer;
Stash stash;

void setup () {
  Serial.begin(57600);
  Serial.println("\n[webClient]");

  if (ether.begin(sizeof Ethernet::buffer, mymac) == 0) 
    Serial.println( "Failed to access Ethernet controller");
  if (!ether.dhcpSetup())
    Serial.println("DHCP failed");

  ether.printIp("IP:  ", ether.myip);
  ether.printIp("GW:  ", ether.gwip);  
  ether.printIp("DNS: ", ether.dnsip);  

  if (!ether.dnsLookup(website))
    Serial.println("DNS failed");
    
  ether.printIp("SRV: ", ether.hisip);
}

void loop () {
  ether.packetLoop(ether.packetReceive());
  
  if (millis() > timer) {
    timer = millis() + 15000; //Transmit every minute
    // themperatures from all sensors
    sensorsA.requestTemperatures();
    sensorsB.requestTemperatures();
    // save themperatures to values
    float aThermometer  = sensorsA.getTempC(inside);
    float aThermometer1 = sensorsA.getTempC(outside);
    float aThermometer2 = sensorsB.getTempC(dogHouse);
    float aThermometer3 = sensorsB.getTempC(cathouse);
    delay(200);
    // generate two fake values as payload - by using a separate stash,
    // we can determine the size of the generated message ahead of time
    byte sd = stash.create();
    // create text with values for THINGSPEAK with more fields
    stash.print("field1=");
    stash.println(aThermometer);
    stash.print("&field2=");
    stash.println(aThermometer1);
    stash.print("&field3=");
    stash.println(aThermometer2);
    stash.print("&field4=");
    stash.println(aThermometer3);
    
    stash.save();
    
    // generate the header with payload - note that the stash size is used,
    // and that a "stash descriptor" is passed in as argument using "$H"
    Stash::prepare(PSTR("POST /update HTTP/1.1" "\r\n" 
                        "Host: $F" "\r\n" 
                        "Connection: close" "\r\n" 
                        "X-THINGSPEAKAPIKEY: $F" "\r\n" 
                        "Content-Type: application/x-www-form-urlencoded" "\r\n" 
                        "Content-Length: $D" "\r\n" 
                        "\r\n" 
                        "$H"),
            website, PSTR(APIKEY), stash.size(), sd);

    // send the packet - this also releases all stash buffers once done
    ether.tcpSend();
  }
}

—–
web_tepl_thingspeak 2 sensors.ino
2 senzory na jednom pine

/*
| Post temp. values from a DS18B20 to ThingSpeak using the Ethercard interface based on the 
| ENC28J60 chip. ethercard    arduino 1.6.4    <EtherCard.h> from master
| Based on the Ethercard example from www.jeelabs.org

| enc28j60 CS is pin 8
| library ethercard from master   , ethercardmaster.zip
| Phil Grant Jan 2014

*/
#include <EtherCard.h>
// change these settings to match your own setup
#define APIKEY  "C06FVBVE5DCU0UK1 "   // plug your API KEY
#include <Wire.h>
#include <OneWire.h>
#include <DallasTemperature.h> //DS18B20 support
// =========== Setup the Temperature sensor details =================
#define ONE_WIRE_BUS 7  // DS18B20 Temperature chip i/o on pin D7, plug sensors to PIN D7, or change value
#define TEMPERATURE_PRECISION 9
// 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);
// Insert the ID of your temp sensor here, for the sketch, visit here
// http://www.hacktronics.com/Tutorials/arduino-1-wire-address-finder.html
DeviceAddress Thermometer = { 0x28, 0x5C, 0x46, 0xB4, 0x01, 0x00, 0x00, 0x0C }; // ds18b20 address, replace with your address
DeviceAddress Thermometer1 = { 0x28, 0xFF, 0xE2, 0x44, 0x31, 0x04, 0x00, 0xB1 }; // ds18b20 address,replace with your address  you can others sensors
// you can others sensors

// ethernet interface mac address, must be unique on the LAN
byte mymac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };

const char website[] PROGMEM = "api.thingspeak.com";

byte Ethernet::buffer[700];
uint32_t timer;
Stash stash;

void setup () {
  Serial.begin(57600);
  Serial.println("\n[webClient]");

  if (ether.begin(sizeof Ethernet::buffer, mymac) == 0) 
    Serial.println( "Failed to access Ethernet controller");
  if (!ether.dhcpSetup())
    Serial.println("DHCP failed");

  ether.printIp("IP:  ", ether.myip);
  ether.printIp("GW:  ", ether.gwip);  
  ether.printIp("DNS: ", ether.dnsip);  

  if (!ether.dnsLookup(website))
    Serial.println("DNS failed");
    
  ether.printIp("SRV: ", ether.hisip);
}

void loop () {
  ether.packetLoop(ether.packetReceive());
  
  if (millis() > timer) {
    timer = millis() + 15000; //Transmit every minute
    // themperatures from all sensors
    sensors.requestTemperatures();
    // save themperatures to values
    float aThermometer  = sensors.getTempC(Thermometer);
    float aThermometer1 = sensors.getTempC(Thermometer1);
    delay(200);
    // generate two fake values as payload - by using a separate stash,
    // we can determine the size of the generated message ahead of time
    byte sd = stash.create();
    // create text with values for THINGSPEAK with more fields
    stash.print("field1=");
    stash.println(aThermometer);
    stash.print("&field2=");
    stash.println(aThermometer1);

    stash.save();
    
    // generate the header with payload - note that the stash size is used,
    // and that a "stash descriptor" is passed in as argument using "$H"
    Stash::prepare(PSTR("POST /update HTTP/1.1" "\r\n" 
                        "Host: $F" "\r\n" 
                        "Connection: close" "\r\n" 
                        "X-THINGSPEAKAPIKEY: $F" "\r\n" 
                        "Content-Type: application/x-www-form-urlencoded" "\r\n" 
                        "Content-Length: $D" "\r\n" 
                        "\r\n" 
                        "$H"),
            website, PSTR(APIKEY), stash.size(), sd);

    // send the packet - this also releases all stash buffers once done
    ether.tcpSend();
  }
}

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