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How to Build a Low-Latency Local TCP Server with W5500 for a Maker Edge Gateway?

This article describes a maker-oriented edge gateway design that uses the W5500 to run a local TCP server with an emphasis on low latency,

gavinchang

Published March 13, 2026

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Original author: 毛心宇Original source (new tab)

How to Build a Low-Latency Local TCP Server with W5500 for a Maker Edge Gateway?

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How to Build a Low-Latency Local TCP Server with W5500 for a Maker Edge Gateway? Summary This article describes a maker-oriented edge gateway design that uses the W5500 to run a local TCP server with an emphasis on low latency, stable wired communication, and offline operation. In this architecture, the W5500 is the Ethernet transport engine: it provides the hardwired TCP/IP stack, socket handling, and packet buffering, while the MCU side focuses on SPI access, service logic, and gateway behavior. What the Project Does The source presents a local server design for a “Xiaozhi AI edge gateway”…

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