DFRobot W5500 Ethernet PoE Board

Overview

The DFRobot W5500 Ethernet with PoE IoT Board is an Arduino Leonardo-compatible development board that combines an ATmega32u4 microcontroller with a WIZnet W5500 hardwired TCP/IP Ethernet controller and 802.3af Power-over-Ethernet support. This means the board can be powered and networked through a single Ethernet cable, eliminating the need for a separate power supply in deployment scenarios.

The WIZnet W5500 chip provides hardwired TCP/IP stack offloading with 10/100Mbps Ethernet, supporting up to 8 simultaneous socket connections. The SPI interface between the MCU and Ethernet controller runs at up to 80MHz for high throughput. The V2.0 revision features upgraded PoE power regulation circuitry for improved reliability with 48V AC/DC PoE input.

With 20 digital I/O pins (including 7 PWM), 6 analog inputs, and standard Arduino pin-compatible layout, the board is well suited for wired IoT sensor nodes, industrial monitoring, building automation controllers, and network-connected data loggers where reliable wired connectivity and PoE power simplicity are preferred over wireless solutions.