Arduino Ethernet Shield 2

Arduino Ethernet Shield 2 allows an Arduino board to connect to the internet and is based on the WIZnet W5500 Ethernet chip. This Ethernet chip provides an IP network stack capable of both Transmission Control Protocol (TCP) and User Datagram Protocol (UDP). 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 Ethernet shield includes a standard RJ45 connection with an integrated line transformer and Power-over-Ethernet (PoE) enabled. This shield does not come with a built-in PoE module, it is a separate component that must be added. The Ethernet shield also includes an onboard micro-SD card slot and a reset controller that ensures the W5500 Ethernet module is properly reset on power-up. Arduino communicates with the W5500 and SD card using the SPI bus through the ICSP header.


  • 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 several information LEDs
    • ON - indicates that the board and shield are powered
    • LINK - indicates the presence of a network link and flashes when the shield transmits or receives data
    • FDX - indicates that the network connection is full duplex
    • 100M - indicates the presence of a 100Mb/s network connection (as opposed to 10Mb/s)
    • ACT - flashes when RX or TX activity is present
  • 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 Analog 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 four pins), one for input and the other one for output
Publicado: 2018-09-21 | Actualizado: 2023-09-28