Teaching an LLM to Speak Vestaboard Note: Building Vestaboard AI
A Vestaboard is a split-flap display — the kind that used to clatter through train-station departure boards — reimagined as a connected home object. It's gorgeous, it's tactile, and it has a wonderfully small canvas: 3 lines of 15 characters, so 45 characters of real content, drawn from
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Teaching an LLM to Speak Vestaboard Note: Building Vestaboard AI Sascha Corti 27 Jun 2026 • 9 min read Share A Vestaboard is a split-flap display — the kind that used to clatter through train-station departure boards — reimagined as a connected home object. It's gorgeous, it's tactile, and it has a wonderfully small canvas: 3 lines of 15 characters, so 45 characters of real content, drawn from a restricted alphabet of letters, digits, a handful of symbols, and a few color chips.That constraint is exactly what makes it a fun target for a language model. LLMs love to ramble; a Vestaboard Note physically cannot.
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