Media: finalize Bluetooth Web Serial lesson (esp32/bluetooth-web-serial.md)

[jonfroehlich]

Media shot-list for esp32/bluetooth-web-serial.md (L3: Bluetooth Web Serial). Part of the draft-lesson finalization tracked in #122.

⚠️ This page lives on the unmerged esp32-bluetooth branch. Goes live when that branch merges. Carries the "in draft form" banner. Only media today: component photos in the materials table.

Shot list — desk work (drawable in software)

• Fritzing: pot on A7 (Part 1). (bluetooth-web-serial.md:95 TODO)
• Fritzing: Feather V2 onboard NeoPixel + pot on A7 (Part 5 path A). (:315)
• Fritzing: Huzzah32 + external 8-LED NeoPixel stick (GPIO27, 5V, GND) + pot on A7 (Part 5 path B). (:315)

Shot list — bench/capture (hardware + screen recording)

• Part 1 screencast (~15–20s): Python serial_bar_graph.py ASCII bar chart updating as the pot turns over Bluetooth. (:195)
• Part 3 screencast (~15–20s): SerialTest browser app — port picker (USB + BT), BT selected, pot data streaming. (:258)
• Part 4 screencasts (~20–30s each): p5.js circle viz + scrolling sensor graph responding to the pot wirelessly. (:282)
• Part 5 screencast (~30–40s): SerialHueBrightnessTest — hue wheel sets color, pot sets brightness, browser bar stays in sync (bidirectional state). (:460)
• (Bonus) Android screenshot: Serial Bluetooth Terminal showing pot floats. (:488)
• Screenshots: Chrome port-picker (BT labeled); SerialHueBrightnessTest UI at rest. (:453)

Also blocked on (code/hosting, tracked here)

• Push BluetoothPot.ino, BluetoothColorMixer.ino to makeabilitylab/arduino; host SerialHueBrightnessTest/ on GitHub Pages; verify the makelab.serial CDN URL.

Suggested hero

The Part 5 bidirectional color-mixer screencast (~20–25s). Draft caption:

Bidirectional Bluetooth: drag the hue wheel on screen to set color, turn the pot on the breadboard to set brightness — both control one NeoPixel, and each side sees the other's state in real time.

Placement (hero-first standard)

Put the hero block immediately after the TOC --- — before any intro prose, the draft banner, or note box (slot: TOC → hero → optional note → prose; see #123). Markup: <video autoplay loop muted playsinline aria-label="..."> for a local clip (use controls instead of autoplay if it has audio), or <div class="iframe-container"><iframe ... title="descriptive..."></iframe></div> for YouTube — followed by a **Video.**/**Figure.** caption with {: .fs-1 }.