{ "metadata": { "title": "Robot Faces: Drawing Expressive Displays for STEM Robots", "description": "A learning graph of 293 concepts for a high-school-level course teaching students to program expressive robot faces in MicroPython on a 128x64 monochrome OLED display and a 240x240 color round display, spanning hardware wiring, FrameBuf drawing primitives, facial anatomy and layout, emotion psychology, the history of screen-based commercial robots, animation, interactive controls, color-display porting, and a capstone project.", "creator": "Dan McCreary", "date": "2026-07-27", "version": "1.0", "format": "Learning Graph JSON v1.0", "schema": "https://raw.githubusercontent.com/dmccreary/learning-graphs/refs/heads/main/src/schema/learning-graph-schema.json", "license": "CC BY-NC-SA 4.0 DEED" }, "groups": { "HWFND": { "classifierName": "Hardware & Electronics Foundations", "color": "SteelBlue", "font": { "color": "white" } }, "HIST": { "classifierName": "History Of Screen-Based Robot 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