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PoE FeatherWing: Add WIZnet W5500 Ethernet + 4W PoE Power to Any Feather (Drop-In Compatible)

A FeatherWing that delivers WIZnet W5500 Ethernet plus up to 4W isolated IEEE 802.3at PoE—so one Ethernet cable can power and network your Feather.

junlee0615

Published January 15, 2026

Original author: Electronics-Lab · United States of AmericaOriginal source (new tab)

PoE FeatherWing: Add WIZnet W5500 Ethernet + 4W PoE Power to Any Feather (Drop-In Compatible)

Components

Hardware components

x 1

Software Apps and online services

WIZnet parts

Project description

Introduction Let’s start with the problem. Feather boards are great for fast prototyping, but real deployments often need two things: stable wired Ethernet and simple power wiring. This project solves both in one move. The PoE FeatherWing gives your Feather a real Ethernet port and lets it run from Power over Ethernet, so one cable can handle networking and power. WIZnet Product Integration Here’s the key integration point: the board uses WIZnet W5500 as its Ethernet controller. That choice matters because it keeps things familiar. If you’ve used the Adafruit Ethernet FeatherWing, you…

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