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Ethernet shield for arduino

Velleman VMA04: Arduino® Ethernet Shield Module

Velleman VMA04

Preassembled Arduino Ethernet Shield Module

The Velleman VMA04 Ethernet Shield is an interface which allows you to build a simple web server with your Arduino. This module has an integrated MAC controller that supports both Unicast and Broadcast packets. The controller also has a programmable (up to 64-byte) pattern matching feature to be used within a packet at user defined offset, and a programmable wake up for multiple packet formats (Magic Packet, Unicast, Multicast, Broadcast, specific packet matching or any packet). It also uses the ICSP connector as a serial connection to the Ethernet Shield to free up I/O pins designed to be stackable, so it can be used with other shields. The kit includes a free downloadable sketch example to get you up and running.

For a DIY kit version of this module, view the Velleman KA04.



  • Data rates up to 10 Mbps
  • Integrated MAC controller
  • 8 kB Transmit / Receive Packet Dual Port Buffer
  • Max clock speed 20MHz
  • Uses pin 10 and 2 on an Arduino UNO™ board.
  • Dimensions: 80 x 55 x 30 mm / 3.15 x 2.16 x 1.18"
  • Requires 1 Arduino UNO™ - Not Included
  • Also works with the Arduino Mega


Manual explaining how to use the module (english version)


Arduino sketch example
Example sketch to load into your Arduino UNO. Demonstrates how to control the KA04 ethernet shield.

Info Sheets

Product information

Overview of Velleman modules that are equal to D.I.Y Kits
This sheet is useful when you want to know which modules you could find in the do-it-yourself range of Velleman Kits and minikits.

 Warning: this product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov/product