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Image: github.com · The problem We have some wired temperature sensors that are failing to auto negotiate on our switches. From what I have seen is they will default back to 10meg and do not set them self to 100. The ...

Failed Proof shown

A W5500 temperature-sensor network fix that remained unreliable

A user tried to repair Ethernet negotiation on wired temperature sensors with Claude’s help, but reported that the attempted fix was not working reliably.

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Credits

  • Source byline TW-Tom Source ↗

Earliest dated source: 28 Jul 2026

The full story

A user tried to repair Ethernet negotiation on wired temperature sensors with Claude’s help, but reported that the attempted fix was not working reliably.

Their W5500 devices could fall back to a speed unsupported by the switches in use. The issue describes attempts to force a compatible link speed and supplies logs, rather than a confirmed working repair.

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From the maker's own write-up or code. We summarise what they report; we haven't tested it ourselves.

  • ESPHome Project: W5500 failing auto negotiationCode or repositorygithub.com
    Source byline: TW-TomPublished 28 Jul 2026

    The contributor’s issue report, including observations, proposed changes and test notes.

  • The project: maker.wiznet.ioBlog or write-upmaker.wiznet.io

    Linked in the post.

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