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 that 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.
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 all the Arduino/Genuino boards. The on-board micro SD card reader is accessible through the SD Library. When working with this library, SS is on Pin 4. The original revision of the shield contained a full-size SD card slot; this is not supported.
The shield also includes a reset controller, to ensure that the W5100 Ethernet module is properly reset on power-up. Previous revisions of the shield were not compatible with the Mega and need to be manually reset after power-up.
- Based on the W5100Based on the Wiznet W5100 allows an Arduino board to connect to the internet.
- Stackable Design, can directly be supported by Arduino official Ethernet Library.
- Supports up to four simultaneous socket connections
- Can be used to store files for serving over the network.
- Can be accessed using the Mini SD TF library.
- IEEE802.3af compliant
- Low output ripple and noise (100mVpp)
- Overload and short-circuit protection
1 x Ethernet W5100 R3 Ethernet & SD Shield