Notice: This is a board only for study and test for how to use enc28j60 to ethernet, you need to know how to programm avr and some linked Knowledges, other wise please do not buy it. Also, you may need a avr programmer or debugger to begin your work.

Key words: Ethernet IO, WEB remote control, Enc28j60, ATmega32, ATmega644 board

Introduction:

Have you ever thought about connecting an 8bit uC to the Internet? There are already some projects out there that connect an avr uC to the Ethernet by using an old network card or the plain RTL8019 Ethernet controller.

This board is a web server show how to use AVR and ENC28J60 to the Internet , remote Io control , file upload and download , also Webcamra use MCA25 is here.

What' s on the board:

• CPU: mega32(can expand to mega644)
• Ethernet control : Enc28j60
• 4M dataflash AT45DB041  and SD card , for restore html or other files
• One RS232 interface
• 2 relays for output
• 2 P521 for input
• 8 10bit AD interface
• SPI interface
• TWI interface
• PWM interface

Features:

The following key features have been implemented:

• * Ethernet, ARP, IP, TCP, UDP Protocol
• * HTTP server
• * NTP client
• * webcam I/O (640x480px)
• * Servo motor control
• * Temperature logging and graphical output
• * I/O port control (read/write any pin)
• * second uart (using software, 19200baud)

The main parts of the HTTP protocol are implemented in the webserver. You can view any stored website by accessing the webserver with any browser using HTTP GET. The server also supports file upload to the internal DataFlash storage by using HTTP POST, the same as uploading any file with a standard browser. Another important feature is the support of HTTP AUTH: In order to configure the webserver or to upload any file you need to authenticate yourself by using HTTP AUTH. If you request any website starting with " /adm/", your webbrowser will ask you log in with your password, which can be configured by the user.

The NTP client can update the internal clock by connecting to any NTP time server on the internet. The webserver is able to connect to any server in your
local network as well as to any other server on the internet by using a configurable default gateway.

The webcam has a resolution of 640x480px and the image will be a JPG image in an html website. The download of a picture takes about 5 seconds.

Another feature is the control of the webserver' s I/O pins with any standard webbrowser. If you hook up a small relay to the I/O pins you can control your coffee machine from everywhere around the world (and watch it brew the coffee by using the webcam function, of course).

Support:

All code of the webserver is available in the cd, also you can get the schematic in it, they are free for use.

The package includes:

• One AVRVi Ethernet IO kit with crust
• One Ethernet Cable
• One Power adapter
• One CD with user guide and the code and schematic