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etherrape using ATmega644 microcontroller

Project Overview

  • short description: microcontroller with ethernet
  • usability status: beta
  • start: April 2006
  • platform: Atmel ATmega644


With this project, we’ll be creating hard- and software for enabling ethernet on an Atmel microcontroller. fd0 first built a prototype of it on lochraster and then made a fully-featured PCB afterwards, which will be sold as a construction set later on. Everyone with moderate soldering skills will be able to build this device. Only two SMD-devices are used (One is optional – And yes, that’s a feature!).



At first we only had the design-target to create an ethernet-enabled microcontroller platform. But then we thought of all the great things that could be done with such a device and therefore added a lot of different interfaces and hardware. Today, the following features are either built-in or easily available:

  • Ethernet and TCP/IP
  • Linux command line tool
  • RS232
  • RS485/422 (half- /fullduplex)
  • Dalls 1wire bus
  • Infrared Receiver and Transmitter for RC5 Codec, firmware extension necessary for other codecs
  • MCA-25 Cellphone-Camera with VGA resolution can be attached (approx 10 Euro on ebay), not yet supported by firmware
  • 2MB Data-Flash memory
  • I2C
  • SPI


  • ELV ( and Conrad ( offer RF-Controlled devices like powerswitches, dimmers, movement detectors, temperature-sensors and many more. All these devices belong to the FS20 series, which ensures ineropability. By attaching RF Modules to the etherrape (sender and/or receiver module), it becomes a fully fledged member of the FS20-system an can control all devices.


  • We offer a housing with a fully prepared front panel (see pictures below).
  • The housing offers space for an additional 80x100mm PCB to accomodate your selfmade extensions.


On the pictures you can see that only a few different parts are needed for ether-netting a microcontroller. The later prototypes show the various plugs for all kinds of nifty enhancements. Every unused port pin on the controller is available as a pin.


For more detail: etherrape using ATmega644 microcontroller

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