![]() Previous revisions of the Shield were not compatible with the Mega and needed to be manually reset after power-up. The Shield also includes a reset controller, to ensure that the W5500 Ethernet module is properly reset on power-up. The original revision of the Shield contained a full-size SD card slot this is not supported. When working with this library, SS is on Pin 4. The onboard micro-SD card reader is accessible through the SD Library. It is compatible with the Arduino Uno and Mega (using the Ethernet library). There is an onboard micro-SD card slot, which can be used to store files for serving over the network. The Ethernet Shield 2 has a standard RJ-45 connection, with an integrated line transformer and Power over Ethernet enabled. The most recent revision of the board exposes the 1.0 pinout on rev 3 of the Arduino UNO Board. This keeps the pin layout intact and allows another Shield to be stacked on top of it. ![]() The Ethernet Shield 2 connects to an Arduino Board using long wire-wrap headers extending through the Shield. Use the Ethernet library to write sketches that connect to the Internet using the Shield. It supports up to eight simultaneous socket connections. The Wiznet W5500 provides a network (IP) stack capable of both TCP and UDP. It is based on the ( Wiznet W5500 Ethernet chip ). The Arduino Ethernet Shield 2 allows an Arduino Board to connect to the internet.
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