They Said It Was Impossible — We’re Building It Anyway (Sketch → Prototype → Demo)

They told us it couldn’t be done. So we’re documenting the whole build—from napkin sketch and CAD to failed prototypes, late-night fixes, and the first working demo. You’ll see our tools, BOM, costs, tests, and exactly what finally clicked. If you want the parts list and files, comment “BUILD” and I’ll share the repo + checklist.