17053719f1
Sync: the visual playhead now advances on a latency-compensated clock (currentTime − outputLatency||baseLatency) so the on-screen pulse lands when the click is HEARD, not when it's queued — previously the visual could lead the audio by the output buffer / Bluetooth latency (up to ~a subdivision). Applied to editor, player, teacher, and the new pages; also bound the visual queue (vq trim). No data races: single-threaded; only the rAF draw touches vqPtr/currentStep, and each vq entry carries the exact scheduled time of its sound. stage.html — foot-pedal stompbox: two heavy footswitches (Tap=tempo / hold=start- stop, Next=item / hold=prev), 1/4" expression-pedal input → tempo sweep, big floor-readable RGB beat light + angled TFT, analog instrument pass-through. showcase.html — pyramid display piece: an RGB-light pendulum easing to each beat plus per-lane segment rows showing subdivisions/accents/mutes (canvas). Both: dual USB-C (data+power and power-thru) to daisy-chain off one source. Wired into embed.js (stage, showcase variants), build.sh, deploy.sh, the concepts gallery + landing cards, info-stage.html (~$52) + info-showcase.html (~$39) with BOMs, and the README. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
111 lines
7.1 KiB
HTML
111 lines
7.1 KiB
HTML
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<head>
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<meta charset="UTF-8" />
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<title>PM‑S Showcase — info & BOM — VARASYS</title>
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<body>
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<div class="head-left">
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<a class="brand" href="/" title="VARASYS — Simplifying Complexity">
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<img class="brand-logo brand-dark" src="data:image/png;base64,@BUILD:logo-dark@" alt="VARASYS — Simplifying Complexity" />
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<img class="brand-logo brand-light" src="data:image/png;base64,@BUILD:logo-light@" alt="VARASYS — Simplifying Complexity" />
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</a>
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<span class="page-name"><b>PM‑S</b> · Showcase — info</span>
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</div>
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<nav class="site-nav">
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<a href="/editor.html">Editor</a>
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<a href="/concepts.html">Concepts</a>
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<a href="/showcase.html">Open ↗</a>
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</nav>
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</header>
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<main>
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<h1>PM‑S — Showcase</h1>
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<div class="tags"><span class="tag hw">Hardware</span><span class="tag">Display piece</span><span class="tag">~$39 one‑off</span></div>
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<p class="lead">A metronome as an object: the silhouette of a classic pyramid wind‑up unit, but the swinging
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pendulum is pure <b>RGB light</b> — a glowing bob easing to the beat just like the mechanical original — with
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rows of light beneath it showing every lane's subdivisions, accents and mutes.</p>
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<div class="embed-wrap">
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<div data-varasys-metronome="showcase"
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data-patch="v1;t108;kick:4=X..x;snare:4=.X.X;hatClosed:4/4;tom:3~" data-height="560"></div>
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</div>
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<p class="cap">Live widget (embedded). <a href="/showcase.html">Open the full Showcase page ↗</a> · <a href="/embed.html">embed this</a></p>
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<h2>Designed for</h2>
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<p>The shelf, the studio, the shop window — a beautiful, glanceable tempo reference that's a pleasure to watch.
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The RGB pendulum swings in perfect time (decelerating to each extreme exactly as a weighted rod would), and
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the segment rows turn your polymeter pattern into a light show: accents glow amber, normal steps cyan, ghosts
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soft violet, mutes stay dark, and the playhead sweeps each lane. It runs the same grooves as everything else
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(load any program string), plays the click through a small speaker, and is powered over USB‑C with a second
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"thru" port to daisy‑chain. No instrument I/O — it's a showpiece, not a signal‑chain tool.</p>
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<h2>Bill of materials</h2>
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<p class="sub">Rough parts list — a USB‑C‑powered RP2040 display piece driving addressable RGB light.
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Ballpark one‑off prices (USD); cheaper at volume.</p>
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<table class="bom">
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<thead><tr><th>Part</th><th class="q">Qty</th><th class="c">~$</th></tr></thead>
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<tbody>
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<tr class="grp"><td colspan="3">Brain</td></tr>
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<tr><td class="part">RP2040 board, USB‑C <span class="spec">— e.g. Waveshare RP2040‑Zero</span></td><td class="q">1</td><td class="c">4</td></tr>
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<tr class="grp"><td colspan="3">RGB light</td></tr>
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<tr><td class="part">Addressable RGB LEDs (WS2812B) <span class="spec">— pendulum rod + lane segment rows, ~50 px</span></td><td class="q">1</td><td class="c">5</td></tr>
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<tr><td class="part">Frosted acrylic diffuser / light‑guide <span class="spec">— the glowing "pendulum" face</span></td><td class="q">1</td><td class="c">3</td></tr>
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<tr class="grp"><td colspan="3">Audio</td></tr>
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<tr><td class="part">MAX98357A I²S amp + small speaker <span class="spec">— the click</span></td><td class="q">1</td><td class="c">4</td></tr>
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<tr class="grp"><td colspan="3">Power & build</td></tr>
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<tr><td class="part">2× USB‑C (data+power & power‑thru) + PWR LED <span class="spec">— daisy‑chain</span></td><td class="q">1</td><td class="c">3</td></tr>
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<tr><td class="part">Custom PCB (or perfboard)</td><td class="q">1</td><td class="c">4</td></tr>
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<tr><td class="part">Passives, wire</td><td class="q">—</td><td class="c">2</td></tr>
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<tr><td class="part">Pyramid enclosure <span class="spec">— cast/CNC aluminium or hardwood, frosted front panel</span></td><td class="q">1</td><td class="c">14</td></tr>
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<tr class="total"><td>Total (one‑off)</td><td class="q"></td><td class="c">≈ $39</td></tr>
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</tbody>
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</table>
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</main>
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<div class="site-foot">VARASYS · Simplifying Complexity — <span id="appVersion">v0.0.1-dev</span></div>
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