UCC

AAS_Dev adds AAS metamodel, MQTT, HTTP, and W5500 Ethernet paths to MUFFIN firmware for MODLINK/MT11 industrial gateway development.

OEE_Public uses ESP32-S3, W5500 Ethernet, SD logging, FastAPI, SQLite, and React to move factory machine states into an OEE dashboard.

Arduino sketch to read the status of up to 4 security sensors using End Of Line resistors and push events to MQTT

It's just ridiculous the price for an IP KVM solution. I simply can't get accept that! So, this is a poor man IP KVM that works pretty well, and allows one to g

A Raspberry Pi Pico, W5500, INMP441, TFLite Micro, and CallMeBot path detects fire alarm audio locally and sends WhatsApp alerts over Ethernet.

BACnetLight

MqttTemplates

netclient

US11269308B2 lists a generic Ethernet Shield in a smart PLC architecture. Arduino W5100/W5500 shields show one possible WIZnet path.

Flexi-Ninja is a fork of stepper-ninja for Expatria's hardware. Flexi-Ninja replaces the breakout board abstraction with a PlatformIO based build system and boa

HWANHEE NET-CHECKER: ESP32+W5500 handheld LAN tester for quick on-site IP, gateway, DNS, and loop checks.

Probe, read and write SPI flash with ESP32

ESP32 based vending machine controller board with Ethernet, Wi-Fi, and 4G LTE connectivity

Multi-functional Poly-phase (3-phase, single-phase) Poer Meter using ESP32 and ADE78xx AFE

A single PoE cable delivers power, control, and 1080p live video — automatically. Here's how we built a GoPro-to-Ethernet bridge with BLE, a Wi-Fi Soft-AP, and

open-source lighting platform that transforms an ESP32 into a professional lighting controller supporting Art-Net, sACN, DMX512

A production-grade firmware architecture that brings together MQTT, Wiegand readers, RS485 devices, I2C LCD, RTC, and SD card storage — all running on a single

Arduino Mega 2560 firmware for a 4-cell Li-ion BMS by @QDarkRex, with per-cell protection and a W5500 Ethernet web dashboard + REST API. (from Indonesia)

This project is for a quadruple laser projection controller, aimed at supporting room-scale projections

zephyr + W5500

A homebrew slot machine TITO, player tracking and display project

OpenDeck is an open-source MIDI and OSC controller platform for DIY control surfaces, sensor interfaces, and Ethernet-connected OSC nodes with W5500 support.

FPGA firewall (Arty Z7-20 + W5500) by a Romania-based author @StefanGutu. Detects IP/ARP spoofing with HW rule-based filtering and a WebSocket monitor.

The original project uses local AVR control, but community members recommended W55RP20 as a practical Ethernet upgrade for remote industrial control.