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The Arduino Ethernet Shield enables an Arduino board to connect to the internet using the Wiznet W5100 ethernet chip. This chip provides a network (IP) stack that supports both TCP and UDP protocols. The Ethernet W5100 Shield Network Expansion Board, which comes with a micro SD card slot, supports up to four socket connections at once.
To connect to the internet using the Arduino shield, utilize the Ethernet library to write sketches. The shield connects to an Arduino board using long wire-wrap headers that pass through the shield. This keeps the pin layout intact and allows for stacking of another shield on top.
The most recent revision of the board exposes the 1.0 pinout on the Arduino UNO board's rev 3. This Ethernet Shield facilitates a quick connection of the UNO R3 board to the internet. To get started, plug the module onto the Arduino board, connect it to the network using an RJ45 cable (not included), and follow a few simple instructions to control your world through the internet. Additionally, it allows the connection of your Arduino UNO 328 or MEGA 2650 1280 to a network or the internet while storing or retrieving files on a Micro SD Card.
The Ethernet Shield features a standard RJ-45 connection with an integrated line transformer and Power over Ethernet enabled. It also has an onboard micro-SD card slot, which stores files that are accessible over the network. The shield is compatible with Uno and Mega boards, utilizing the Ethernet library. The onboard microSD card reader is accessible via the SD Library, with SS located on Pin 4 when working with this library. Note that the original revision of the shield had a full-size SD card slot that is no longer supported.
Lastly, the shield includes a reset controller, ensuring that the W5100 Ethernet module properly resets upon power-up. In previous revisions of the shield, compatibility with the Mega board required a manual reset after power-up.
The latest revision of the Ethernet Shield includes a micro-SD card slot, which can be interfaced with using the SD library.
|Shield Type||Ethernet Shield|
|Based on||Wiznet W5100|
|Function||Allows Arduino boards to connect to the internet|
|Protection||Over Load and Short Circuit|
|Dimensions||5 x 4 x 1cms|
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Arduino is capable of utilizing Ethernet connectivity through the implementation of either an Ethernet Shield or Ethernet module. The Ethernet Shield is an additional board that interfaces with an Arduino board, facilitating Ethernet connectivity. This auxiliary board generally incorporates an Ethernet controller, an Ethernet jack, and other pertinent components necessary for Ethernet communication. By plugging the Ethernet Shield onto an Arduino board and programming it, the device can communicate with other gadgets through Ethernet.
Furthermore, select Arduino boards include an Ethernet controller and jack, allowing for Ethernet connectivity without the need for an additional shield. For instance, the Arduino Ethernet board is equipped with these components.
Arduino boards can establish communication via Ethernet by employing various networking protocols, such as TCP/IP and UDP. By utilizing Ethernet connectivity, Arduino can communicate with other devices on a network, access web services and APIs, and execute other functions that mandate Internet connectivity.
The Arduino Uno board does not have an Ethernet controller built-in, so it does not have Ethernet connectivity by default. However, the Arduino Uno can be used with an Ethernet Shield or Ethernet module to add Ethernet connectivity.
To establish a connection between an Arduino and an Ethernet Shield, adhere to the following steps:
First and foremost, procure the necessary components, including an Arduino board, an Ethernet Shield, an Ethernet cable, and a power source.
Subsequently, locate the Ethernet Shield and place it atop the Arduino board, ensuring that the pins on the shield align with the headers on the Arduino board.
Next, connect one end of the Ethernet cable to the Ethernet port on the shield, while connecting the other end to a network switch or router.
Afterward, establish a connection to a power source, such as a USB cable or a battery, to the Arduino board, making sure that the power source provides enough current to power both the Arduino board and the Ethernet Shield.
Then, proceed to create a program using the Arduino IDE that utilizes the Ethernet library to communicate over the Ethernet connection. One may refer to the Arduino website or other online resources for examples and tutorials on how to use the Ethernet Shield with Arduino.
Finally, upload the program to the Arduino board via the Arduino IDE. Upon completion, the Arduino board will be able to communicate over the Ethernet connection. The Ethernet Shield provides a reliable and convenient way to add Ethernet connectivity to an Arduino-based project, facilitating communication with other devices on a network, accessing web services and APIs, and executing other Internet-related tasks.