Arduino Ethernet shield is based on W5100 ethernet chip which provides a network stack capable of both TCP and UDP. The module allows Arduino to connect with internet without operation system. This ethernet module supports 4 simultaneous socket connection.

RoboElements has the latest version of Arduino Ethernet shield so it has a micro SD card slot and a reset controller. By using the SD card, it stores the data serving over the internet. Reset controller ensures that the W5100 Module is properly reset on power-up.

Features

• Ethernet shield allows Arduino to connect to the internet
• Has SD card slot to save data
• No soldering required to connect with Arduino. Directly plug puzzle board
• Compatible with all the version of Arduino
• Connection speed: 10/100Mb
• No external power needed
• Arduino communicates with both W5100 and SD card using SPI bus
• Shield provides standard RJ45 ethernet jack

LED and indication

• PWR: Board is powered
• LINK: the presence of network and flashes when transmits or receives data
• 100M: the presence of 100Mb/s network connection
• FULLD: a network connection is a full duplex
• COLL: flashes on detection of network collision
• RX: flashes when receives data
• TX: flashes when transmits data

Instrcutions

• Ethernet library comes in Arduino 0019
• SD card library is not yet included in Arduino distribution.
• W5100 and SD card share SPI bus, so only one can be active at a time
• While using both peripherals in the programme, corresponding libraries should be taken care of.
• If one of the peripherals used in the programme, then the maker needs to explicitly deselect it. To do so
  • For SD card: set pin 4 as output and write a high for it
  • For W5100: set digital pin 10 as a high output