Hey there! 👋 This is **Part 2** of our enorasisCore Hackster series. In Part 1 you trained a model in the browser and shipped it to an Android app with MIT App Inventor:Here we keep the same training workflow — but the output goes to a **$5 ESP32 board** instead of a phone screen. Hold colored paper to your webcam → the browser recognizes the color → the ESP32 onboard LED lights up wirelessly. No cloud, no Python, no app store. Just paper, a board, and Bluetooth. **Who is this for?**• Teachers who want a **desk-sized STEM demo** (science fair, open day, first AI lesson)• Students who already tried Part 1 — or anyone starting fresh with hardware• Makers who like instant feedback: change a class name, retrain, LED follows **Why this project is worth 45 minutes:**• ✅ Same no-code Train UI as Part 1 — no second platform to learn• ✅ Visible result: everyone in the room sees the LED change• ✅ Educator flashes firmware once; students only use the browser• ✅ Real BLE — the same wireless idea as professional IoT, on a beginner budget Step 1: Flash the ESP32 (educator — one time)Students never open Arduino IDE. Flash the board before class — at home or the night before. Get the firmwareDownload the.ino from here Download Arduino ESP32 Boards ( board manager ) : Find the Port Right-click the Start button, select Device Manager, and expand the Ports (COM & LPT) NOW Select Board and Port : ———————————————————————————————————— Board settingsThese two settings trip people up — double-check before Upload: · Board: Waveshare ESP32-C3 Zero · USB CDC On Boot: Enabled After upload, press reset. The onboard LED should cycle red → blue → green → off. That self-test means the board is ready. ———————————————————————————————————— Class names in