ESP-NOW Gateway for Home Assistant over W5500 Ethernet
A gateway-centered design that bridges ESP-NOW switch nodes to MQTT and Home Assistant through an ESP32 with a WIZnet W5500 Ethernet interface.
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Project description
Overview This project describes a modular smart-home control system in which an ESP32 gateway connects remote relay nodes over ESP-NOW and exposes them to Home Assistant through MQTT. The gateway is not just a radio coordinator. It is the boundary device that joins three different concerns: local low-overhead wireless control, wired IP networking through the WIZnet W5500, and automation-system integration through MQTT discovery and state topics. The design matters because it avoids treating every relay node as a full network client. Instead, Ethernet and MQTT complexity are concentrated in…
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