Weblog Ben’s HobbyCorner

Found a nice AVR fusebit calculator.

http://palmavr.sourceforge.net/cgi-bin/fc.cgi

(this is a corrected link, made a small typo)

Well, here a picture of an Easy TCP/IP board from www.mcselec.com, with an Atmega644, a SD-Card on the AVRISP-program connector. Had to do some minor changes to the config_mmc.bas, changed the MISO, MOSI, SCK settings, and a small wire from PortD.5 to pin 3 of the AVRISP-program connector. This is used to select the SD-card.

Not bad, 512 Mbyte external memory through four wires. Using AVR-DOS for it.

Here a picture, made with my mobile phone, of the first real PCB for the SD-card.
Made with Eagle, the dust on the top are the SMD-parts.

We got it running, an AVR Ethernet board from www.drftech.com with an Atmega644, 20 Mhz crystal and a 512 Mbyte SD-card. Running a full-blown HTML-page including graphics. Graphics also resides on the SD-card. Relays can be switched on from the HTML-page, and the inputs can be read.

Here the board with the SD-card

 

Here the terminal screen while booting the board.

Thanks to Steve from New Zealand and Franz Achatz.