🎙️✨ A compact PoE development board featuring the XIAO ESP32S3 Plus, with an integrated, isolated PoE module and TPS563201-based power conversion that delivers a clean 5V supply to power the microcontroller. Ideal for IoT projects, smart home devices, and industrial automation—where the versatile combination of reliable Ethernet connectivity and low-power wireless processing simplifies installation and enhances system performance.
Note:
Early Build provides beta products (featuring 3D-printed cases) and evolving software before final release. We welcome your feedback and suggestions to shape the product's evolution. Enjoy exploring!
This V1.2 features an INT pin wiring fix (D16 → W5500 INTn), enabling active Bluetooth proxy functionality in ESPHome.
🌟 Features
- High-Performance Microcontroller: Built on the XIAO ESP32S3 Plus platform, the board delivers robust processing power and efficient wireless connectivity, making it ideal for complex IoT and embedded applications.
- Integrated PoE with Isolation & Power Conversion: Featuring a robust PoE module with built-in isolation, the board safely accepts a 12V Ethernet power input. A high-efficiency TPS563201 buck converter steps the 12V down to a stable 5V rail, providing optimal power to the XIAO ESP32S3 Plus.
- Reliable Ethernet Connectivity: Equipped with an onboard W5500 Ethernet chip and a standard RJ45 jack, the board ensures stable wired network access for seamless data transmission and remote management.
- Versatile I/O Options: With dual-sided I/O outputs, you can easily expand functionality and interface with a range of sensors and peripherals to customize your application.
- Compact & Ready-to-Deploy Design: Combining integrated PoE, isolation circuitry, and Ethernet connectivity in a small form factor, this board simplifies prototyping and enables efficient deployment in smart home, industrial automation, or network appliance projects.
📊 Specifications
| Parameter | Description |
| MCU | XIAO ESP32-S3 Plus |
| Antenna | 2.4GHz Rod Antenna (2.81dBi) |
| USB Type-C | Input voltage: 5V |
| PoE Chip | MQ7813T120 |
| PoE Power Supply | PoE IEEE802.3af Output Current: 12V/1.1A High Efficiency 86% (Input 48V, Load 12V@1.1A) |
| Ethernet Chip | WIZnet W5500 |
| Ethernet Interface | RJ45 10/100Mbps Ethernet |
| TCP/IP Protocols | TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE |
| LED Indicator | Power ×1 User ×1 |
| Button | Reset |
| I/O Interface | XIAO ESP32-S3 Plus: D0/D2/D3/D4/D5/D6/D7/D11/D12/D13/D14/D15/D17/D18/D19 |
| W5500 INTn Pin | D16 |
| Product Size | 83 × 118 × 26 mm |
| Product Weight | 75g |
| Enclosure | 3D-Printed in White |
🔧 Hardware Overview
Note Change Record: 2025/12/1 – This V1.2 features an INT pin wiring fix (D16 → W5500 INTn), enabling active Bluetooth proxy functionality in ESPHome.
🧩 Applications
- Industrial Automation
- Network Control
- Smart Home & Building Automation
- Remote Monitoring
- Surveillance
📚 Documents
📦 Part List
| XIAO W5500 Ethernet Adapter | ×1 |
| 2.4GHz Rod Antenna (2.81dBi) for Seeed Studio XIAO | ×1 |