Arduino Ethernet Shield 2 - Internet Connectivity for Arduino Projects
Connect your Arduino to the internet with the Ethernet Shield 2. Features W5500 chip, micro-SD slot, and PoE capability for advanced networking.

Overview
The Arduino Ethernet Shield 2 offers a seamless way to connect your Arduino projects to the internet. With a straightforward setup, you can attach this module to your Arduino Board, link it with an RJ45 cable to your network, and embark on a digital adventure in no time. This shield is your gateway to controlling devices, collecting data, and more through the vast expanse of the internet.
Open-Source Learning and Innovation: Embrace the open-source spirit of Arduino with the Ethernet Shield 2. Every aspect of this platform, from the hardware and software to the comprehensive documentation, is openly available. This transparency allows you to delve into the inner workings of the shield, understand its mechanics, and use this knowledge as a foundation for your unique creations. It's an invitation to learn, modify, and innovate.
Designed for Creativity and Compatibility: Join a global community of makers and hobbyists who are already harnessing the power of Arduino to bring their imaginative projects to life. The Ethernet Shield 2 is designed to be compatible with a wide range of Arduino Boards, ensuring that your creative endeavors are not limited by hardware constraints. Whether you're a beginner or an experienced developer, this shield is crafted to fuel your creativity and expand the possibilities of your projects.
Advanced Networking Features: Equipped with the W5500 Ethernet chip, the Arduino Ethernet Shield 2 supports advanced networking capabilities. It facilitates both TCP and UDP connections, allowing for up to eight simultaneous socket connections. This feature-rich shield also includes a micro-SD card slot for additional storage options and is capable of Power over Ethernet (PoE), making it a versatile choice for network-connected projects.
Join the Arduino Movement: Arduino is more than just a platform; it's a movement towards accessible technology and shared knowledge. By choosing the Arduino Ethernet Shield 2, you're not just buying a piece of hardware; you're becoming part of a worldwide community that values innovation, education, and collaboration. Start your journey with Arduino today and see where your creativity takes you.
*Note: RJ45 cable and Arduino Board are required but not included.
- Operating voltage 5V (supplied from the Arduino Board)
- Ethernet Controller: W5500 with internal 32K buffer
- Connection speed: 10/100Mb
- Connection with Arduino on SPI port
Tech specs
The Arduino Ethernet Shield 2 allows an Arduino Board to connect to the internet. It is based on the (Wiznet W5500 Ethernet chip). The Wiznet W5500 provides a network (IP) stack capable of both TCP and UDP. It supports up to eight simultaneous socket connections. Use the Ethernet library to write sketches that connect to the Internet using the Shield. The Ethernet Shield 2 connects to an Arduino Board using long wire-wrap headers extending through the Shield. This keeps the pin layout intact and allows another Shield to be stacked on top of it.
The most recent revision of the board exposes the 1.0 pinout on rev 3 of the Arduino UNO Board.
The Ethernet Shield 2 has a standard RJ-45 connection, with an integrated line transformer and Power over Ethernet enabled.
There is an onboard micro-SD card slot, which can be used to store files for serving over the network. It is compatible with the Arduino Uno and Mega (using the Ethernet library). The onboard micro-SD card reader is accessible through the SD Library. When working with this library, SS is on Pin 4. The original revision of the Shield contained a full-size SD card slot; this is not supported.
The Shield also includes a reset controller, to ensure that the W5500 Ethernet module is properly reset on power-up. Previous revisions of the Shield were not compatible with the Mega and needed to be manually reset after power-up. The current Shield supports a Power over Ethernet (PoE) module designed to extract power from a conventional twisted pair Category 5 Ethernet cable. PoE module features as follows:
- IEEE802.3af compliant
- Input voltage range 36V to 57V
- Overload and short-circuit protection
- 12V Output
- High efficiency DC/DC converter: typ 85% @ 80% load
- 1500V isolation (input to output)
NB: the Power over Ethernet module is proprietary hardware not made by Arduino, it is a third party accessory. For more information, see the datasheet
The Shield does not come with a built in PoE module, it is a separate component that must be added on. Arduino communicates with both the W5500 and SD card using the SPI bus (through the ICSP header). This is on digital pins 10, 11, 12, and 13 on the Uno and pins 50, 51, and 52 on the Mega. On both boards, pin 10 is used to select the W5500 and pin 4 for the SD card. These pins cannot be used for general I/O. On the Mega, the hardware SS pin, 53, is not used to select either the W5500 or the SD card, but it must be kept as an output or the SPI interface won't work.
Note that because the W5500 and SD card share the SPI bus, only one at a time can be active. If you are using both peripherals in your program, this should be taken care of by the corresponding libraries. If you're not using one of the peripherals in your program, however, you'll need to explicitly deselect it. To do this with the SD card, set pin 4 as an output and write a high to it. For the W5500, set digital pin 10 as a high output.
- The Shield provides a standard RJ45 Ethernet jack.
- The reset button on the Shield resets both the W5500 and the Arduino Board.
- The Shield contains a number of information LEDs:
- ON: indicates that the Board and Shield are powered
- 13 is the Arduino standard built in LED
- ACT: flashes when RX or TX activity is present
- LINK: indicates the presence of a network link and flashes when the Shield transmits or receives data
In this picture below we have tagged the yellow ACT, the green LINK,, the 13 Built in LED and the ON LED.
This shield also hosts Tinkerkit compatible connectors as follows:
- 2 TinkerKit connectors for two Analog Inputs (in white), connected to A2 and A3.
- 2 TinkerKit connectors for two Aanlog Outputs (in orange in the middle), connected to PWM outputs on pins D5 and D6.
- 2 TinkerKit connectors for the TWI interface (in white with 4 pins), one for input and the other one for output.
Arduino Ethernet Shield 2 - Internet Connectivity for Arduino Projects
- Brand - Arduino
- Manufacturer - Arduino
- Packaging - Bulk
- Product - Expansion Boards
- Product Type - Ethernet Development Tools
- Standard Pack Qty - 15
- Subcategory - Development Tools
- Tool Is For Evaluation Of - W5500