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This shield lets Arduino boards connect to the internet using the Wiznet W5100 Ethernet chip, which provides a network (IP) stack capable of both TCP and UDP. It supports up to four simultaneous socket connections, so a project can, for example, serve a web page and send data to a separate server at the same time.
A micro SD card slot on the shield adds local storage, which is useful for logging sensor data or serving files over the network without needing extra wiring.
The shield connects through an RJ-45 jack at 10/100 Mb, runs from 5 VDC and measures 75 x 54 x 25 mm, weighing 78 g. It has a stackable design compatible with the Arduino official Ethernet Library and works with Arduino Duemilanove, Uno and Mega boards. It is also specified with Power over Ethernet (PoE) support to IEEE802.3af with 1500 V isolation between input and output, a feature more commonly found on PoE-specific shields, so confirm this with the seller if PoE matters to your project.
Flash a simple blink or UART example first to confirm the board, toolchain and debugger all talk to each other, before moving on to your own peripherals. Keep the SWD or USB connection short and shielded if you see intermittent flashing failures.
Makers building wired IoT devices, data loggers and small web servers on classic Arduino boards who prefer a stable Ethernet connection over WiFi.
The WIZnet W5100.
Up to four sockets.
Yes, a micro SD card slot.
Duemilanove, Uno and Mega.
10/100 Mb over RJ-45.
| Brand | Generic |
|---|---|
| Chipset | WIZnet W5100 |
| Connector | RJ-45 |
| Dimensions | 75 x 54 x 25 mm |
| Operating Voltage | 5V |
| Weight | 78.000000 g |
| Selling unit | PCS |
