{"slug":"ross","name":"ROSS - Remote Operated Semantic Sketching","hackathon":"hack-the-north-2025","tagline":"A robot that draws paintings onto a blind person's palm with warm and cold brushes, with narration.","placement":{"status":"finalist","awards":["Hack the North 2025: Finalists"],"track":null},"team":{"size":null,"members":["Theodore Zhu"]},"problem":"Galleries are mostly 2D visual work; blind and low-vision visitors cannot experience paintings.","solution":"Segment a painting into meaningful objects, convert each into simplified stroke graphs and millimetre coordinates, and have a two-axis robot trace them on the palm; warm vs cold colours map to heated vs cooled brushes, with narration and mood music in a Bob Ross voice.","demo_moment":"Photograph a painting by voice, then feel its shapes drawn on your hand while a familiar voice describes them.","build_style":"hardware-software","tech":{"stack":["meta-sam","python","ramer-douglas-peucker","arduino","nema-steppers","servos","3d-printing","xtts-fine-tune"],"ai_patterns":["computer-vision","generative-media","voice-ai"]},"domains":["accessibility","creative-media","robotics-hardware"],"analysis":{"why_it_stood_out":[{"claim":"Clear human stakes: a specific group gets access to culture they are excluded from.","basis":"curator-inference"},{"claim":"The warm/cold two-brush feature was not working; the team demoed one brush and no colour, and still reached the finals — a working core beat a complete feature list.","basis":"team-stated","source":0},{"claim":"Dropped an LLM-based simplification approach for a deterministic geometric pipeline after inconsistent results.","basis":"team-stated","source":0},{"claim":"Bob Ross as name and narrator makes the accessibility message warm and memorable.","basis":"curator-inference"},{"claim":"Featured by the organizer as a past showcase project.","basis":"organizer-stated","source":1}],"mechanisms":["human-stakes","physical-artifact","cultural-reference-hook","visible-engineering-depth","demo-first-wow"],"judging_lens":["wow-factor","impact","technical-depth"],"lessons":["Cut the broken feature from the demo and describe it as next; never let the unfinished part define the pitch.","When an LLM step is flaky, replace it with deterministic code before demo day."],"confidence":"medium"},"links":{"devpost":"https://devpost.com/software/ross-42pnvi","repo":null,"demo":null,"video":null},"sources":[{"url":"https://devpost.com/software/ross-42pnvi","kind":"devpost-project","retrieved_at":"2026-09-14"},{"url":"https://hackthenorth.com/","kind":"official-event-page","retrieved_at":"2026-09-14"}]}