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Image: u/ScarionnS on Reddit · The FPGA board layout routed by Claude

Partly Described

A board with HDMI 4K, DDR3, USB and an FPGA routed by Claude Fable 5.2

Claude Fable 5.2 routed a board with HDMI 4K, DDR3, high-speed USB and an FPGA, cut 44 dollars from the BOM of each board and found errors in electrical simulation.

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Credits

  • Reddit poster ScarionnS Source ↗

Earliest dated source: 10 Nov 2026

The full story

A user says Claude Fable 5.2 routed a six-layer board with HDMI 4K, DDR3, high-speed USB and an FPGA, cut 44 dollars from the bill of materials of each board, and validated it in electrical simulation, finding and fixing footprint errors and voltage drops. The board hadn't been sent to the fab yet when they posted.

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Sources

From a short post by the maker, so the details are as they tell them.

  • Reddit: Fable 5.2 is a competent Electrical EngineerForum threadreddit.com
    Reddit poster: ScarionnSPosted 10 Nov 2026

    The post with screenshots of the layout.

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