ARDUINO ETHERNET SHIELD W5100

Description: The Arduino Ethernet Shield allows an Arduino board to connect to the internet. It is based on the Wiznet W5100 ethernet chip providing a network (IP) stack capable of both TCP and UDP. The Arduino Ethernet Shield 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 latest revision of the shield adds a micro-SD card slotwhich can be used to store files for serving over the network. It is compatible with the Arduino UNO and Mega (using the Ethernet library coming in Arduino 0019). An SD card library is not yet included in the standard Arduino distribution. Arduino communicates with both the W5100 and SD card using the SPI bus (through the ICSP header). This is on digital pins 1112and 13 on t