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PMS04-B

Horter's EUR 24.90 I2ARL kit ships its LAN slot empty and its ATmega328P has no Ethernet MAC, so Modbus TCP needs the separate EUR 11.90 W5500 module.

Somon's Halow-GW Wi-Fi HaLow gateway spends all eight W5500 hardware sockets on three TCP servers, two TCP clients, two UDP channels and one HTTP listener.

PP-Ethernet-UART-HAT is a 45 x 30 mm PLATYPUS module that converts 3.3 V UART to Ethernet on a WIZnet W55RP20 and ships with W55RP20-S2E firmware preloaded.

boneIO's gen 2 dimmer moved to an ESP32-S3, which has no Ethernet MAC, so its shipping firmware declares a WIZnet W5500 on SPI in place of gen 1's LAN8720.

Inoa Satellite Gateway

SlimmeLezer Pro — The W5500 That Gave Ethernet Back to the ESP32-C3, and Wired Up the Smart Meter Reader

This project highlights a commercial 2-channel IP relay module designed for remote electrical equipment control over a network.

BioFi is a software-led hardware-enabled solution to personal healthcare.

블루투스 기능 등을 활용, 오프라인 매장에서 스마트폰에 대하여 무선 시건 기능을 제공함으로써 신제품에 대한 자유로운 체험 을 가능하게 하는 무선 보안 시스템입니다.

All the I/O and connectivity of the CREST — without the Arduino headers.

OpenKNX REG1 is an open hardware DIN-rail platform whose REG1-App-Eth board adds a WIZnet W5500 to an RP2040, bridging a KNX twisted-pair line and KNX-IP.

The eHaLow/Br by SystemBase is a next-generation wireless LAN gateway bridge designed for long-range IoT data transmission.

Why Industrial Shields Has Stuck With the W5500 for a Decade — One Ethernet Layer Across AVR, ESP32, and Linux

Why Doesn't the Arduino Opta Use WIZnet? — The Fork in Industrial PLC Ethernet Design

NORVI X: A Modular Industrial IoT Controller Combining ESP32-S3 and W5500

KinCony's B4M Smart Controller, introduced in 2026, is an interesting commercial example of this approach

ThinkLink GD6: A LoRaWAN Gateway Based on W5500 Ethernet and ESP32-S3

STM32-网络通讯32路DIDO控制板

Soldered NULA Ethernet W55RP20

From 10 to 60 Channels, the Network Layer Never Changes — A Structural Analysis of the KinCony N-Series ESP32-S3 Energy Meters

Industrial I/O Controller Powered by ESP32-S3 and W5500

FLS developed an SNMP-based Serial-to-Ethernet converter using WIZnet’s W55RP20.

Waveshare's RP2350-POE-ETH pairs the dual-core RP2350A with WIZnet's W6300 hardwired TCP/IP controller and an onboard RJ45, with optional 802.3af PoE.