XIAO W5500 Ethernet Adapter

The Seeed XIAO W5500 Ethernet Adapter is a PoE IoT board offering stable wired networking and flexible development.

COMPONENTS Hardware components

WIZnet - W5500

x 1

PROJECT DESCRIPTION

Power and Data Through a Single Cable

IoT devices and smart home systems increasingly demand stable network connections. However, Wi-Fi often comes with limitations such as unstable signals, complex power requirements, and security risks.
The Seeed XIAO W5500 Ethernet Adapter addresses these challenges by integrating Power over Ethernet (PoE), allowing both power and data to be delivered through a single Ethernet cable. This design provides network stability while simplifying wiring.

Key Specifications

MCU: ESP32-S3 Plus (with Wi-Fi & BLE support)
Ethernet: WIZnet W5500 (10/100 Mbps, hardware TCP/IP support)
PoE Module: MQ7813T120 (IEEE 802.3af, with isolation)
Power Conversion: TPS563201 buck converter (stable 5 V output)
Input Options: PoE or USB-C 5 V supply
Form Factor: 83 × 118 × 26 mm, 75 g, 3D-printed enclosure
Price: $19.9

Intended Use Cases

This device is not just a simple Ethernet-to-Wi-Fi converter. It is a full-fledged IoT development board where developers can upload their own firmware and decide how the system should behave.

Seeed envisions this board being used as:

IoT sensor hubs: Stable wired data collection and transmission
Smart home devices: Lighting, door locks, and energy management systems
Industrial monitoring: Environments where reliable power and network are essential
Camera streaming units: Security or monitoring cameras with minimal latency

Demo Projects Provided

Seeed offers three ready-to-use demos in the official wiki to help developers get started:

1.Ethernet Events Logger

Logs network events (connection, disconnection, errors).
Useful for monitoring and debugging IoT gateways.

2.Ethernet WebServer

Runs a basic HTTP server accessible via IP.
Can display sensor data or control devices remotely.

3.Ethernet Camera Streaming

Works with the ESP32-S3 Sense camera module.
Provides real-time video streaming over Ethernet.

These demos illustrate the adapter’s versatility—from simple logging, to web-based device control, and even multimedia streaming.

Why It Stands Out

PoE integration: Power and network over one cable, simplifying deployment.
Flexibility: Use either Wi-Fi or Ethernet depending on your needs.
Expandability: Connect with various sensors and modules.
Open-source resources: Schematics, 3D models, and sample code are all available.

This makes the XIAO W5500 more than just an “adapter”—it is a robust and cost-effective IoT platform.

Final Thoughts

At first glance, the name “Adapter” suggests a simple bridge between Ethernet and Wi-Fi. In reality, the Seeed XIAO W5500 Ethernet Adapter is a complete IoT board with PoE, designed to deliver stability, efficiency, and developer flexibility—all for under $20.

From smart homes to industrial monitoring, this board offers developers a reliable foundation for building Ethernet-powered IoT solutions.

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