Ethernet Shield Module W5100 Board For Arduino [Generic Version] - (AD28435)

Description:

Arduino Ethernet Shield V1 allows an Arduino board to connect to the Internet. It is based on the Wiznet W5100 ethernet chip (datasheet). 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 stackable headers that extend through the shield. This keeps the pin layout intact and allows another shield to be stacked on top.

Ethernet Shield V1 has a standard RJ-45 connection, with an integrated line transformer that enables power over the Ethernet shield.

There is an integrated micro-SD card slot, which can be used to store files to serve on the network. It is compatible with all Arduino / Genuino boards. The built-in micro SD card reader is accessible via 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 display also includes a reset controller to ensure the W5100 Ethernet module resets correctly upon power-up. Earlier revisions of the shield were not compatible with the Mega and had to be manually reset after power-up.

The current shield has a Power over Ethernet (PoE) module designed to draw power from a standard twisted pair 5 Ethernet cable:

- IEEE802.3af compliant

- Low output ripple and noise (100mVpp)

- Input voltage range from 36V to 57V

- Overload and short-circuit protection

- 9V output

- High-efficiency DC/DC converter: typical 75% @ 50% load

- 1500 V isolation (input to output)

Note: The Power over Ethernet (PoE) module is proprietary hardware not manufactured by Arduino, it is a third-party accessory. For more information, please see the datasheet.

The shield does not come with the PoE module built-in, it is a separate component that must be added.

Arduino communicates with the W5100 and SD card using the SPI bus (via the ICSP port). This is on digital pins 10, 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, hardware SS pin 53 is not used to select the W5100 or the SD card, but it must be kept as an output or the SPI interface will not work.

Note that because the W5100 and the SD card share the SPI bus, only one can be active at a time. If you are using both peripherals in your program, the corresponding libraries should handle this. However, if you are not using one of the peripherals in your program, you will need to explicitly deselect it. To do this with the SD card, set pin 4 as an output and write a high value to it. For the W5100, set digital pin 10 as a high output.

The shield provides a standard RJ45 ethernet jack.

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

The shield contains several informative 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

- COLL: flashes when network collisions are detected

The solder jumper labeled "INT" can be connected to allow the Arduino board to receive interrupt notifications of events from the W5100, but this is not supported by the Ethernet library. The jumper connects the W5100's INT pin to Arduino's digital pin 2.

See also: how to get started with the Ethernet shield and the Ethernet library reference

Reference link

Datasheet