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The Arduino Ethernet Shield allows an Arduino board to connect to the internet. It is based on the Wiznet W5100ethernet chip . The Wiznet W5100 provides a ne...

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The Arduino Ethernet Shield allows an Arduino board to connect to the internet. It is based on the Wiznet W5100ethernet chip . The Wiznet W5100 provides a network (IP) stack capable of both TCP and UDP. It supports up to four simultaneous socket connections. Use the Ethernet library to write sketches which connect to the internet using the shield. The ethernet shield connects to an Arduino board using long wire-wrap headers which extend through the shield. This keeps the pin layout intact and allows another shield to be stacked on top.

The Ethernet Shield has a standard RJ-45 connection, with an integrated line transformer and Power over Ethernet enabled.

There is an onboard micro-SD card slot, which can be used to store files for serving over the network. It is compatible with the Arduino, Crowduino 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.

There is also the w5200 Ethernet Shield for you.

Specification

  • Operating voltage 5V (supplied from the Arduino Board)
  • Ethernet Controller: W5100 with internal 16K buffer
  • Connection speed: 10/100Mb
  • Connection with Arduino on SPI port
  • The Shield  contains a number of informational LEDs
  • PWR: indicates that the board and shield are powered
  • LINK: indicates the presence of a network link and flashes when the shield transmits or receives data
  • FULLD: indicates that the network connection is full duplex
  • 100M: indicates the presence of a 100 Mb/s network connection (as opposed to 10 Mb/s)
  • RX: flashes when the shield receives data
  • TX: flashes when the shield sends data
  • TX: flashes when the shield sends data
  • COLL: flashes when network collisions are detected

Package list

  • W5100 Ethernet Shield for Arduino X1

Wiki & External links

Manual

Ethernet library

W5100 DataSheet

Jargon buster

Plain-language definitions for the technical terms used above.

Headers
Rows of connector contacts on a fixed pitch (commonly 2.54 mm) used to link a board to a breadboard, jumper wires, or another board. They come as male pin headers and female socket headers; when a module ships with pre-soldered headers it can be used straight away, whereas bare pads require soldering the pins yourself.
microSD card
A microSD card is a small removable flash memory card used to store data such as audio, images, logs or program files. Its capacity and formatting (often FAT32 or exFAT) affect how much can be stored and whether the card needs preparing before use.
RX
RX means receive, usually showing data being received by the board. An RX indicator LED can help with troubleshooting USB or serial communication.
Shield
An add-on board that plugs into a main controller board to give it extra features such as sensing, motor control or communication. Knowing a product supports shields helps you judge whether it can connect neatly into an existing maker-board setup.
SPI
A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
TX
TX means transmit, usually showing data being sent from the board. A TX indicator LED can help you see when the board is communicating or uploading code.
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