Open-source-ish chart pattern detection using Gemini Vision API

Show HN: Open-source-ish chart pattern detection using Gemini Vision API

Operating in show hn launch, Open-source-ish chart pattern detection using Gemini Vision API operates.

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I built an AI that detects chart patterns to fight my own confirmation bias I kept losing money on trades because I'd "see" patterns that weren't there. Classic confirmation bias — when you're already in a position, your brain lies to you.So I built a tool: upload any chart screenshot, get pattern detection in seconds.Why Gemini over GPT-4V? Tested both. Gemini 1.5 Flash is: - Faster (~2s vs ~5s) - Cheaper (~$0.0001 per analysis) - More consistent structured outputs for this specific task GPT-4V sometimes gave me essays. Gemini stayed focused.Stack: Next.js 14, Supabase (auth + postgres), Stripe, VercelThe hard parts weren't the AI: - Auth edge cases (email confirmation flows, session refres

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