Ethernet W5100 Shield Network Expansion Board w/ Micro SD Card Slot for Arduino

The Arduino Ethernet Shield allows an Arduino board to connect to the internet. It is based on the Wiznet W5100 ethernet chip. The Wiznet W5100 provides a network (IP) stack capable of both TCP and UDP. The Ethernet W5100 Shield Network Expansion Board w/ Micro SD Card Slot 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 most recent revision of the board exposes the 1.0 pinout on rev 3 of the Arduino UNO board. This Ethernet Shield connects the UNO R3 board to the internet in mere minutes. Just plug this module onto your Arduino board, connect it to your network with an RJ45 cable (not included) and follow a few simple instructions to start controlling your world through the internet. allows you to connect your Arduino UNO 328 or MEGA 2650 1280 to a network or the internet AND retrieve or store files on a Micro SD Card!

Features :

• Based on the W5100Based on the Wiznet W5100 allows an Arduino board to connect to the internet.
• Stackable Design, can directly be supported by for Arduino official Ethernet Library.
• Supports up to four simultaneous socket connections
• Can be used to store files for serving over the network.
• Compatible with the for Arduino Duemilanove (168 or 328), Uno as well as Mega (1280/2560).
• Can be accessed using the Mini SD TF library.
• The current shield has a Power over Ethernet (PoE) module designed to extract power from a conventional twisted pair Category 5 Ethernet cable.
• IEEE802.3af compliant
• Low output ripple and noise (100mVpp)
• Overload and short-circuit protection
• 1500V isolation (input to output)