新版Ethernet W5100 R3 網絡擴展板 支持MEGA 模塊 UNO

2012 R3版 Arduino Ethernet Shield

W5100 網路擴展板 支持POE功能

板載miniSD接口

Arduino  UNO Mega2560均可用

賣場另有POE模組提供

2012 R3版本有了不了改進，兼容性更強，更穩定的複位電路和快速的網路接入時間，同時支持POE功能！

以W5100為核心的Arduino Ethernet網路擴展板，可以使Arduino成為簡單的Web服務器或者通過網路控制讀寫Arduino的數字和類比介面等網路應用。可直接使用IDE中的Ethernet庫文件便可實現一個簡單Web服務器。同時支持mini SD卡（TF卡）讀寫，功能強悍，不容錯過！

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 via a standard RJ45 Ethernet jack using the shield.

The latest revision of the shield adds a micro-SD card slot, which can be used to store files for serving over the network. It is compatible with the Arduino Uno and Mega (using the Ethernet library). You can access the on-board SD card slot using the SD library which is included in the current Arduino build.

The latest revision of 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. The reset button on the shield resets both the W5100 and the Arduino board.

Arduino communicates with both the W5100 and SD card using the SPI bus (through the ICSP header). This is on digital pins 11, 12, and 13 on the Duemilanove and pins 50, 51, and 52 on the Mega. On both boards, pin 10 is used to select the W5100 and pin 4 for the SD card. These pins cannot be used for general i/o. On the Mega, the hardware SS pin, 53, is not used to select either the W5100 or the SD card, but it must be kept as an output or the SPI interface won’t work.