Dev builds free open-source 3D human embryo explorer with GPT-6 Astra, 16 stages
pratikgandhi · reddit · 2026-10-25
Reddit user pratikgandhi used GPT-6 Astra to build a free, MIT-licensed 3D human embryo explorer for visually learning development.
- Covers 16 stages with rotatable models and a slider moving from whole body to separated structures to individual-part inspection
- Debugging lesson: the slider broke between "Stage" and "Inspect" because moving the pointer from the model cleared the hover target; fixed by retaining the target and offering an explicit part selector
- Mobile needed distinct treatment: scrollable two-column overview, larger controls, and touch handling that distinguishes page scrolling from model rotation
- Navigation inspired by Ash's Human Atlas; author notes it's not a validated medical model and stage accuracy still needs expert review
- Free, no account required; code on GitHub with a 20-second demo
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