Description: The Arduino Ethernet is a microcontroller board based on the Arduino Uno, and incorporating a WizNet W5100 TCP/IP Embedded Ethernet Controller. The Arduino Ethernet does not have an onboard USB-to-serial driver chip, but has a Wiznet Ethernet interface.

It can be programmed like an Uno via a six-pin FTDI style serial connector such as the FTDI Basic Breakout - 5V or any FTDI-style USB-to-serial connector. When plugged into a USB to Serial adapter, the Arduino Ethernet is powered from the adapter.

A separate power-over-Ethernet (PoE) module is soldered to the board to provide power from a conventional twisted pair Category 5 Ethernet cable. It is IEEE802.3af compliant, and works with all compliant PoE injectors currently available.

This shield also incorporates an onboard microSD card reader, which can be used to store files for serving over the network, is accessible through the SD Library. Pin 10 is reserved for the Wiznet interface, SS for the SD card is on pin 4.

The Arduino Ethernet has a number of facilities for communicating with a computer, another Arduino, or other microcontrollers. A SoftwareSerial library allows for serial communication on any of the Uno's digital pins. The ATmega328 also supports TWI and SPI communication. The Arduino software includes a Wire library to simplify use of the TWI bus; see the documentation for details. For SPI communication, use the SPI library.

The board also can connect to a wired network via ethernet. When connecting to a network, you will need to provide an IP address and a MAC address. The Ethernet Library is fully supported. The onboard microSD card reader is accessible through the SD Library. When working with this library, SS is on Pin 4.

Note: Full documentation for this products can be found at the Arduino Ethernet page.

• ATmega328 Microcontroller
• 5V operating voltage
• Input voltage - 7-12V
• 14 digital I/O Pins 14 (of which 4 provide PWM output)
• Reserved pins:
  • pins 10 to 13 used for SPI
  • pin 4 used for SD card
  • pin 2 used for W5100 interrupt (when bridged)
• 6 analog inputs
• 32K Flash Memory
• 2KB SRAM
• 1KB EEPROM
• 16Mhz Clock Speed
• W5100 TCP/IP Embedded Ethernet Controller
• Power Over Ethernet ready Magnetic Jack
• Micro SD card, with active voltage translators

Documents:

• Schematic
• EAGLE files