Ethernet Shield for Arduino - W5200



This Arduino-sized Ethernet Shield is based on the Wiznet W5200 Ethernet Chip, and provides an easy way of getting your Arduino Online.

This Arduino-sized Ethernet Shield is based on the Wiznet W5200 Ethernet Chip, and provides an easy way of getting your Arduino Online. Fits all version of arduino Main board,e.g.UNO, mega 2560. To start, just plug this module onto your Arduino board, connect it to your network with an CAT 5 Ethernet Cable (not included) and follow a few simple instructions, you will be able to explore the world with internet. The pin layout also allows another shield to be stacked on top. An aluminum alloy radiator is placed onto W5200 chip to release excessive heat. 

  • Directly supported by Arduino official Ethernet Library.
  • Add-on micro-SD card slot, which can be used to store files and accessed via the SD Library.
  • Compatible with the Arduino Uno as well as Mega (2560).
  • The Wiznet W5200 provides a network (IP) stack capable of both TCP and UDP.
  • Supports up to four simultaneous socket connections.
  • Use the Ethernet library to write sketches which connect to the internet using the shield.
  • Aluminum alloy radiator to release excessive heat
  • Home network device: set top box, PVR, digital media center
  • Serial Ethernet: access control system, LED display, wireless AP repeater, etc.
  • Parallel Ethernet: POS machine or hand-held printer, copier
  • USB Ethernet: storage devices, network printers
  • Security Systems: Network Camera
  • Monitoring equipment
  • Embedded Server
Technical Specifications
  • Working voltage: 5v
  • Ethernet socket
  • Support Micro SD card reading / writing
  • Ethernet and SD card sharing the SPI interface, only one function per i
  • Standard size Arduino compatible controller, while supporting Arduino Mega Series
  • Size: 70x55x30mm


Shipping List

DFRduino Ethernet Shield for Arduino - W5200  *1



Installing the library requires patching the current Ethernet library to add support for this chip:

1. Install W5200 library Download W5200 library,and find the Arduino library folder "(Arduino sketchbook folder)libraries".If there is old version Ethernet library(W5100), please delete it. And unzip the new library to the folder, then restart your Arduino IDE.

2. Using the W5200 library and evaluate existing Ethernet example. In the Arduino IDE, go to Files->Examples->Ethernet and open any example, compile and upload the file to Arduino board.

3. Note: libraries/Ethernet/Ethernet.h needs the following at line 10 instead of #define MAX_SOCK_NUM 4, since it doesn't #include "w5100.h" anymore.


1. Plug Ethernet Shield For Arudino- W5200 V1.0 on the Arduino UNO. 


2. Connect RJ45 cable to the Ethernet board.

W5200 connection.JPG


3. Open the arduino IDE, find the example sketch: W5200_WebServer



4 Change the Dreamer MEGA X2 PORT


5 Change the IP address which you need. And upload the sketch.


6 Open your browser,and input your advice IP address. If it displays 6 analog date, it is works well.

Analog input.PNG

Sample code


  Web Server
 A simple web server that shows the value of the analog input pins.
 using an Arduino Wiznet Ethernet shield. 
 * Ethernet shield attached to pins 10, 11, 12, 13
 * Analog inputs attached to pins A0 through A5 (optional)
 created 18 Dec 2009
 by David A. Mellis
 modified 9 Apr 2012
 by Tom Igoe
#include <SPI.h>
#include <Ethernet.h>
//Attention: Official SPI port use "D10" as SS interface.You need to define SS pin acording to the actual SS wire connection
////define the interface: Dreamer MEGA  X1 PORT
//#define SS  53   //Gadgeteer PIN 6
//#define nRST  46  //Gadgeteer PIN 4
//#define nPWDN 45  //Gadgeteer PIN 5
//#define nINT 2  //Gadgeteer PIN 3
//define the interface: Dreamer MEGA X2 PORT
#define SS    10   //Gadgeteer PIN 6
#define nRST  8  //Gadgeteer PIN 4
#define nPWDN 9  //Gadgeteer PIN 5
#define nINT 3  //Gadgeteer PIN 3
// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = { 
  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
IPAddress ip(192,168,0,217);
// Initialize the Ethernet server library
// with the IP address and port you want to use 
// (port 80 is default for HTTP):
EthernetServer server(80);
void setup() {
 //Next setting parameter is very important!!!! If you don't have reliable reset setting, W5200 maybe will not work!!!!! //
  pinMode(SS,OUTPUT);  //Define the interfave :Dreamer MEGA X2 PORT Gadgeteer PIN 6 use SS
  digitalWrite(nPWDN,LOW);  //enable power
  digitalWrite(nRST,LOW);  //Reset W5200
 delay(200);       // wait W5200 work
 // Open serial communications and wait for port to open:
   while (!Serial) {
    ; // wait for serial port to connect. Needed for Leonardo only
  // start the Ethernet connection and the server:
  Ethernet.begin(mac, ip);
  Serial.print("server is at ");
void loop() {
  // listen for incoming clients
  EthernetClient client = server.available();
  if (client) {
    Serial.println("new client");
    // an http request ends with a blank line
    boolean currentLineIsBlank = true;
    while (client.connected()) {
      if (client.available()) {
        char c =;
        // if you've gotten to the end of the line (received a newline
        // character) and the line is blank, the http request has ended,
        // so you can send a reply
        if (c == 'n' && currentLineIsBlank) {
          // send a standard http response header
          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/html");
          client.println("Connnection: close");
          client.println("<!DOCTYPE HTML>");
                    // add a meta refresh tag, so the browser pulls again every 5 seconds:
          client.println("<meta http-equiv="refresh" content="5">");
          // output the value of each analog input pin
          for (int analogChannel = 0; analogChannel < 6; analogChannel++) {
            int sensorReading = analogRead(analogChannel);
            client.print("analog input ");
            client.print(" is ");
            client.println("<br />");       
        if (c == 'n') {
          // you're starting a new line
          currentLineIsBlank = true;
        else if (c != 'r') {
          // you've gotten a character on the current line
          currentLineIsBlank = false;
    // give the web browser time to receive the data
    // close the connection:
    Serial.println("client disonnected");

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Ethernet Shield for Arduino - W5200

Ethernet Shield for Arduino - W5200

This Arduino-sized Ethernet Shield is based on the Wiznet W5200 Ethernet Chip, and provides an easy way of getting your Arduino Online.