Arduino Ethernet Shield


This Product Has Been Discontinued, This Page Is For Reference Only.

45.95 USD
$45.95 ea.
$41.36 ea.

Intertoobs. Intarwebs. Series of tubes. Whatever. Connect your Arduino / Freeduino SB to your LAN, WAN, or whole darn Internet!

Description [Hide]

Arduino is a great microcontroller platform, but if you want to work with it from afar, take a look at this shield - the Arduino Ethernet Shield.

It uses the Wiznet W5100 ethernet chip with internal 16K buffer, which gives you a network TCP/UDP stack, and will support up to four socket connections at the same time. And being an official Arduino product, the development environment has built-in Ethernet libraries for easy programming. There is also an onboard micro-SD card slot, which can be used to store files for serving over the network. It is compatible with the Arduino Uno and Mega (using the Ethernet library). The onboard microSD card reader is accessible through the SD Library. When working with this library, SS is on Pin 4.

A unique feature of this board is the use of  long wire-wrap headers which extend through the shield. This passes the main Arduino pins straight through, allowing another shield to be mounted on top. Unfortunately, the Ethernet Shield needs the digital (SPI) pins 10, 11, 12, and 13, and needs dedicated access to these pins while the shield is being used.


  • Wiznet W5100 ethernet chipset
  • TCP/UDP stack
  • Rev. 3 pinout with SDA/SCL/IOREF/extra pins
  • Supports 4 simultaneous socket connections
  • Houses a standard RJ45 ethernet cable jack
  • Has an onboard microSD card slot
  • LED indicators for Power, Link, Full Duplex, 100M connectivity, Tx/Rx, and Network Collisions
  • Reset button  resets both the W5100 and main Arduino / Freeduino motherboard

Documentation and source files can be found Here

Documentation [Hide]

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