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Arduino Ethernet Shield W5100

Arduino Compatible Ethernet Shield
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৳649.7
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The Arduino Ethernet Shield allows an Arduino board to connect to the internet. It is based on the Wiznet W5100ethernet chip. We don't sell many clone boards because some are of poor quality. However this Ethernet board is a top quality product which works just the same as the official board. It contains the same chipset and so all of the examples using the Ethernet library work just the same. This board offers a substantial discount on the official board.
Operating voltage: 5V (supplied from the Arduino Board)
Ethernet Controller: W5100 with internal 16K buffer
Connection speed: 10/100Mb
Connection with Arduino on SPI port
The Shield contains a number of informational LEDs
PWR: indicates that the board and shield are powered
LINK: indicates the presence of a network link and flashes when the shield transmits or receives data
FULLD: indicates that the network connection is full duplex
100M: indicates the presence of a 100 Mb/s network connection (as opposed to 10 Mb/s)
RX: flashes when the shield receives data
TX: flashes when the shield sends data
TX: flashes when the shield sends data
COLL: flashes when network collisions are detected
The Arduino Ethernet Shield – W5100 allows your Arduino to connect to the internet via LAN Cable. The shield 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.
The on-board micro-SD card slot can be used to store files for serving over the network. It is compatible with the Arduino Uno and Mega. You can access the on-board SD card slot using the SD library which is included in the current Arduino build.
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 Uno 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.
Note that because the W5100 and SD card share the SPI bus, only one can be active at a time. If you are using both peripherals in your program, this should be taken care of by the corresponding libraries. If you’re not using one of the peripherals in your program, however, you’ll need to explicitly deselect it. To do this with the SD card, set pin 4 as an output and write a high to it. For the W5100, set digital pin 10 as a high output.
Arduino Library: http://arduino.cc/en/Reference/Ethernet
http://www.elecrow.com/download/Ethernet.zip
Datasheet: http://www.elecrow.com/download/W5100_Datasheet_v1_1_6.pdf

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