Original : https://unbrick.id/arduino-ethernet-shield-web-server/
It is based on the Wiznet W5xxx line of Ethernet chips. The pin 10 is used to select the ethernet controller W5100 pin 9 as RESET to the W5100 and pin 4 to select the SD card module. The Ethernet shield connects the Arduino to the Internet.
Understanding the Ethernet Shield Web Page Sketch The W5100 Ethernet Shield for the Arduino interfaces with the Arduino over the SPI connector this is the small 4 pin block in the middle of the Arduino. It has a connection speed of up to 10100Mb. The setup is very simple.
Wiznet 5100 Ethernet Shield for Arduino – these are all over eBay as well. Using the Ethernet library your device will be able to answer a HTTP request with your Ethernet shield. The Ethernet Shield is based upon the W51000 chip which has an internal 16K buffer.
The Arduino Ethernet shield connects your Arduino to the internet in a simple way. The PHP app stores the values when new POST requests are received and also serves the pages that display the information. These chips have a network stack capable of both TCP-IP and UDP.
There is already plenty of code available to get a basic web server running on the Arduino Ethernet Shield. To use an Arduino as a Web server you need the following. Find code and diagrams at.
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