ECB ATmega32/644

ECB_ATmega32/644 is a small (Open source hardware) SBC (Single-board computer) based on the Atmel ATmega32 or Atmel ATmega644 AVR processor (20 MHz).

It was designed through a cooperation between Ulrich Radig, Holger Buss, and Thomas Scherer with the initial intent to remotely control a coffee machine via the internet. The ECB_ATmega32/644 supports up to 2048 bytes RAM. It uses a specially designed embedded operating system and measures 85mm x 77 mm.

Although quite similar to the ECB_AT91, the ECB_ATmega32/644 has distinctive features and far less computing power. This allowed this design of being built DIY with a bare minimum of parts and for a far lower price (the controller alone costs just 5-10€). Also, it is capable of operating at a bare minimum energy consumption (less than 100mA). Besides this, it is still powerful enough to be used as a webserver and to perform web-based remote control, and webcam-monitoring. However, due to the limited computing power, webserver-capability is limited (restricted to 1000 pageviews per second) and the device is mainly targeted for low intensity use.

Features include:

* 20 MHz AVR processor (Atmel ATmega32/644)
* 32 kB of Serial Flash
* 2048 bytes of RAM
* 1 wire-interface (Dallas)
* e-mail, webserver and NTP-time functionality
* SD-memorycard interface (no slot)
* webcam-slot
* <100 mA power consumption
* 7 I/O digital-out channels, and 3 analogue digital-in channels

External links

* [http://www.mikrocontroller.com/de/avr_webserver.php Main website for the project with construction plans, additional info]
* [http://www.ulrichradig.de/site/forum/viewforum.php?f=5 The project's forum]
* [http://tuxgraphics.org/electronics/200606/article06061.shtml English site explaining the remote control capability]