Tag Archives: WIZ550io

WIZ Ethernet Library for Arduino IDE 1.5.7


The Ethernet library lets you connect to the Internet or a local network.

Supported devices

  • ioShield, WIZ550io (used in W5500)
  • W5200 Ethernet Shield, WIZ820io (used in W5200)
  • Ethernet Shield (used in W5100)



Install WIZ Ethernet library

Download all files and overwrite onto the”Arduino\libraries\Ethernet” folder in your project in sketch.
– Ethernet folder has two folers, examples and src folers.

Select device(shield)

Uncomment device(shiel) you want to use.

#ifndef    W5100_H_INCLUDED
#define    W5100_H_INCLUDED

#include <avr/pgmspace.h>
#include <SPI.h>

typedef uint8_t SOCKET;
//#define W5100_ETHERNET_SHIELD
//#define W5200_ETHERNET_SHIELD

Using the WIZ Ethernet library and evaluate existing Ethernet example.

All other steps are the same as the steps from the Arduino Ethernet Shield.
You can use examples in ./Ethernet/examples folder for the Arduino IDE 1.5.7, go to Files->Examples->Ethernet, open any example, then copy it to your sketch file and change configuration values properly.
After that, you can check if it is work well. For example, if you choose ‘WebServer’, you should change IP Address first and compile and download it. Then you can access web server page through your web browser of your PC or something.

Revision History

Initial Release : 15 Jul. 2014

Internet Radio (WIZ550io)


Go to post (in Japanese)

We will introduce the “Internet radio” produced by using the WIZ550io (built-in MAC address) and ATMEGA1284P (Flash128K, EEPROM4K). User can register maximum 80 radio broadcastings. The radio broadcasting registration can be done by the built-in Web page.

The Hardware configuration of “Internet Radio” is as follows,

  • MP3 codec : VS1053b module (3.3V, 74HC4050AP level shift)
  • Ethernet : WIZ550io module
  • Display : 16X2 LCD module

The following Ethernet protocol has been applied in Sketch (arduino-IDE 1.0.5) .

  • DHCP Client
  • HTTP Server ( Web-based broadcast registration )