The Arduino Ethernet Shield Arduino allows you to connect to internet . It is' based on ethernet Wiznet W5100 chip that implements in hardware a complete IP stack full TCP and UDP. It supports up to 4 simultaneous connections. The shield can 'be scheduled through the library's Ethernet in the Arduino software and' provided.
This shield 'compatible with Arduino Mega.
Arduino uses the pin digital I / O 10, 11, 12 and 13 (SPI) to communicate with the W5100. These pins, then, are no longer 'available for general use in your programs.
The Shield 'has a standard RJ45 Ethernet port and a reset button that operates on both the W5100 and on the Arduino microcontroller.
The Shield 'has a series of LED:
- PWR : indicates that the board and the shield are powered
- LINK : indicates the presence of a network link and flashes when sending or receiving data shield
- fulldate : indicates that the connection to the network is in full duplex
- 100M : indicates that the network connection and 'to 100Mbps. When and 'off the connection and' at 10Mbps.
- RX : shield flashes when receiving data
- TX : flashes when the shield sends data
- COLL : flashes when there is a collision of packets in the network (which is sporadic and completely normal)
Jumper 'INT' can be connected to allow the Arduino board to receive notifications when an event generated by the W5100. This, however, is not 'supported by the Ethernet Library. When shorted, the interrupt request is made through the second pin of Arduino.
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