Arduino Ethernet Shield




$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]

Related Products [Hide]


Arduino USB Board (Uno R3)

The Arduino Uno is the all-new replacement for the favourite and popular Arduino Duemilanove. Now shipping R3!

$29.45 USD


Standard LED

Standard sized diffused T1-3/4 LEDs, great for indicators. Available in green, red, yellow, white and blue.

$0.35 USD


Solarbotics Arduino Freeduino Enclosure (SAFE)

The Solarbotics Arduino Freeduino Enclosure (SAFE) is a laser-cut acrylic case for your chopsticks. And by chopsticks, we mean Arduino or Freeduino. Go figure.

$9.95 USD


Arduino Experimenters Kit

The Solarbotics edition of the Oomlout Arduino Experimenter's Kit makes learning Arduino microcontrollers fabulously straightforward!

$84.95 USD


Arduino XBee Shield Empty

This board mates directly with the Arduino USB board and allows the Arduino to wirelessly communicate over a modified ZigBee protocol using the popular XBee module from MaxStream.

$24.95 USD


ScrewShield for Arduino

The ScrewShield is a “wing-format” shield that extends the Arduino pins to sturdy, secure, and dependable screw terminal blocks. (You even get a few bonus terminals for extra GND and power!&#

$10.00 USD


Breadboard Jumper Wire Bundle

This 70-piece flexible wire jumper kit is sure to replace your old-style solid-wire jumpers. These are more flexible, robust, and easy to use!

$6.00 USD


Ultra Bright LED

These water-clear standard sized (T1-3/4) LEDs are considerably brighter than most other LEDs in their class. Available in red, green, yellow, blue and white.

$0.90 USD


Arduino Mega 2560 R3

The Arduino Mega 2560 is the open-source "big brother" to Duemilanove/Uno reference design, using the much more capable ATmega2560.

$58.95 USD


Arduino Leonardo (with headers)

The Arduino Leonardo is a microcontroller board based on the ATmega32u4 (see datasheet in Documentation tab).

$24.95 USD





Remember Me

Forgot Your Password?

Don't Have an Account?
Sign Up!