Freetronics Ethernet Shield for Arduino
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Freetronics Ethernet Shield

Copyright 2010-2012 Freetronics Pty Ltd
Freetronics site:
Freetronics email:

10/100base-T Ethernet shield for the Freetronics Eleven, Arduino Uno, and other boards compatible with the R3 header format.

Includes significant prototyping area using the spare shield area, and supports Power-over-Ethernet (PoE) using either simple jumpers for DIY PoE or a daughter-board module for full standards-compliant PoE.


  • Prototyping area.
  • 10/100Base-T connectivity.
  • Power-over-Ethernet "PD" (powered device) support.
  • Activity / status indicators.
  • Reset button wired through to Arduino reset pin.
  • Wiznet W5100 IC reset circuit.
  • SPI bus contention fixed for W5100 IC.
  • Parts overlay on both the top and the bottom.

More information is available on our product page at:

The "docs" folder within this repository includes a handy copy of the schematic in PDF format and image(s) of the pcb.


The design is saved as an EAGLE project. EAGLE PCB design software is available from free for non-commercial use. To use this project download it and place the directory containing these files into the "eagle" directory on your computer. Then open EAGLE and navigate to Projects -> eagle -> EthernetShieldR3.


The specific terms of distribution of this project are governed by the license referenced below.


Licensed under the TAPR Open Hardware License ( The "license" folder within this repository also contains a copy of this license in plain text format.