76a94b629b
Reworks the Micro per the new brief: a long, narrow extruded-aluminium bar you patch into your signal instead of a little box. - Better display: amber 4-char 14-segment (Adafruit font) that shows BPM *and* short track names, replacing the 3-digit 7-segment. Off-segments kept very dim so the lit digits read clearly. - Roller instead of knob: a recessed, clickable horizontal thumb-roller — roll = tempo, press = start/stop, hold + roll = switch track. - New form/I-O: 1/4" TRS in on one end; USB-C + 1/4" TRS out on the other; USB-C or 2×AA power (battery gauge on the face). Click is summed into the signal in the analog domain (+ a small monitor speaker). info-micro, concepts and the landing card updated to match; BOM reworked (analog path + 2 jacks + 2×AA + 14-seg) → ≈ $38. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
118 lines
8.1 KiB
HTML
118 lines
8.1 KiB
HTML
<!DOCTYPE html>
|
||
<html lang="en">
|
||
<head>
|
||
<meta charset="UTF-8" />
|
||
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
|
||
<title>PM‑µ Micro — info & BOM — VARASYS</title>
|
||
<link rel="icon" type="image/svg+xml" href="data:image/svg+xml;base64,@BUILD:favicon@">
|
||
<script>
|
||
(function(){ try{ var p = localStorage.getItem("metronome.theme");
|
||
if (p!=="light" && p!=="dark" && p!=="system") p = "system";
|
||
document.documentElement.dataset.theme = p==="system" ? (matchMedia("(prefers-color-scheme: light)").matches ? "light" : "dark") : p;
|
||
} catch(e){ document.documentElement.dataset.theme = "dark"; } })();
|
||
</script>
|
||
<style>
|
||
/*@BUILD:include:src/base.css@*/
|
||
:root{ --bg1:#12151c;--bg2:#05070a;--txt:#c7d0db;--muted:#7f8b9a;--link:#6cb6ff;--panel-bg:#161b22;--panel-bd:#2a313c;--field-bg:#0e1116; }
|
||
:root[data-theme="light"]{ --bg1:#f5f8fc;--bg2:#dde4ec;--txt:#1e2630;--muted:#5c6776;--link:#1769c4;--panel-bg:#fff;--panel-bd:#d2dae4;--field-bg:#f1f4f8; }
|
||
body{ margin:0; min-height:100vh; padding:22px 16px 56px; color:var(--txt); background:radial-gradient(circle at 50% -8%,var(--bg1),var(--bg2)); }
|
||
a{ color:var(--link); }
|
||
main{ width:100%; max-width:760px; margin:26px auto 0; }
|
||
h1{ font-size:24px; margin:0 0 4px; } h2{ font-size:16px; margin:28px 0 8px; }
|
||
p{ color:var(--muted); font-size:14px; line-height:1.6; } p.lead{ max-width:62ch; color:var(--txt); }
|
||
.tags{ display:flex; gap:8px; flex-wrap:wrap; margin:8px 0 4px; }
|
||
.tag{ font-size:11px; color:var(--muted); border:1px solid var(--panel-bd); border-radius:999px; padding:2px 9px; }
|
||
.tag.hw{ color:var(--cyan); border-color:rgba(10,179,247,.45); }
|
||
.embed-wrap{ margin:16px 0 4px; }
|
||
.cap{ font-size:12px; color:var(--muted); }
|
||
.site-foot{ max-width:760px; margin:40px auto 0; font-size:12px; color:var(--muted); }
|
||
</style>
|
||
</head>
|
||
<body>
|
||
|
||
<header class="site-head">
|
||
<div class="head-left">
|
||
<a class="brand" href="/" title="VARASYS — Simplifying Complexity">
|
||
<img class="brand-logo brand-dark" src="data:image/png;base64,@BUILD:logo-dark@" alt="VARASYS — Simplifying Complexity" />
|
||
<img class="brand-logo brand-light" src="data:image/png;base64,@BUILD:logo-light@" alt="VARASYS — Simplifying Complexity" />
|
||
</a>
|
||
<span class="page-name"><b>PM‑µ</b> · Micro — info</span>
|
||
</div>
|
||
<nav class="site-nav">
|
||
<a href="/editor.html">Editor</a>
|
||
<a href="/concepts.html">Concepts</a>
|
||
<a href="/micro.html">Open ↗</a>
|
||
<button id="themeBtn" class="tbtn" title="toggle light / dark theme">☀</button>
|
||
</nav>
|
||
</header>
|
||
|
||
<main>
|
||
<h1>PM‑µ — Micro</h1>
|
||
<div class="tags"><span class="tag hw">Hardware</span><span class="tag">Inline practice bar</span><span class="tag">~$38 one‑off</span></div>
|
||
<p class="lead">A long, narrow practice bar you patch <i>into</i> your signal: instrument in one end, amp or
|
||
headphones out the other, the click mixed in. One clickable thumb‑roller does everything, an amber
|
||
14‑segment display shows tempo and track names, and it runs off USB‑C or 2×AA.</p>
|
||
|
||
<div class="embed-wrap">
|
||
<div data-varasys-metronome="micro"
|
||
data-patch="v1;t120;kick:4;snare:4=.X.X;hatClosed:4/2" data-height="240"></div>
|
||
</div>
|
||
<p class="cap">Live widget (embedded). <a href="/micro.html">Open the full Micro page ↗</a> · <a href="/embed.html">embed this</a></p>
|
||
|
||
<h2>Designed for</h2>
|
||
<p>Practising plugged in — at the desk or on the go. It sits inline in your signal chain: a 1/4″ TRS input on
|
||
one end, USB‑C and a 1/4″ TRS output on the other, with the metronome click summed into your signal in the
|
||
<b>analog domain</b> (and a small monitor speaker). No menus — a single clickable thumb‑roller does it all
|
||
(roll = tempo, press = start/stop, hold + roll = switch track), and the amber 14‑segment display shows the
|
||
BPM or the track name. Powered from USB‑C or 2×AA for portability; ships with the editor's grooves built in.</p>
|
||
|
||
<h2>Bill of materials</h2>
|
||
<p class="sub">Rough parts list — a portable RP2040 inline bar (USB‑C or 2×AA) with analog click injection.
|
||
Ballpark one‑off prices (USD); cheaper at volume.</p>
|
||
<table class="bom">
|
||
<thead><tr><th>Part</th><th class="q">Qty</th><th class="c">~$</th></tr></thead>
|
||
<tbody>
|
||
<tr class="grp"><td colspan="3">Brain & display</td></tr>
|
||
<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>
|
||
<tr><td class="part">4‑char 14‑segment alphanumeric LED + I²C driver <span class="spec">— amber; HT16K33. Shows BPM & track names</span></td><td class="q">1</td><td class="c">4</td></tr>
|
||
<tr class="grp"><td colspan="3">Control</td></tr>
|
||
<tr><td class="part">Clickable thumb‑roller <span class="spec">— EC11 encoder + roller wheel · roll / press / hold‑roll</span></td><td class="q">1</td><td class="c">2</td></tr>
|
||
<tr class="grp"><td colspan="3">Audio — analog click injection</td></tr>
|
||
<tr><td class="part">PCM5102A I²S DAC <span class="spec">— line‑level click</span></td><td class="q">1</td><td class="c">3</td></tr>
|
||
<tr><td class="part">Dual op‑amp, NE5532 / OPA2134 <span class="spec">— hi‑Z instrument buffer + summing mixer</span></td><td class="q">1</td><td class="c">1</td></tr>
|
||
<tr><td class="part">PAM8302A mono Class‑D + 8 Ω speaker <span class="spec">— monitor</span></td><td class="q">1</td><td class="c">4</td></tr>
|
||
<tr class="grp"><td colspan="3">Connectors & power</td></tr>
|
||
<tr><td class="part">1/4″ jack <span class="spec">— Inst In (TS) · Out (TRS)</span></td><td class="q">2</td><td class="c">2</td></tr>
|
||
<tr><td class="part">USB‑C bus power (5 V) + PWR LED <span class="spec">— also carries config</span></td><td class="q">1</td><td class="c">1</td></tr>
|
||
<tr><td class="part">2×AA holder + boost/management + battery gauge <span class="spec">— AA → 3.3/5 V for portable use</span></td><td class="q">1</td><td class="c">3</td></tr>
|
||
<tr class="grp"><td colspan="3">Build</td></tr>
|
||
<tr><td class="part">Custom PCB (or perfboard)</td><td class="q">1</td><td class="c">4</td></tr>
|
||
<tr><td class="part">Passives, headers, wire <span class="spec">— R/C for the analog stage + decoupling</span></td><td class="q">—</td><td class="c">2</td></tr>
|
||
<tr><td class="part">Extruded aluminium bar enclosure + end caps <span class="spec">— bead‑blasted, matte‑black anodised</span></td><td class="q">1</td><td class="c">8</td></tr>
|
||
<tr class="total"><td>Total (one‑off)</td><td class="q"></td><td class="c">≈ $38</td></tr>
|
||
</tbody>
|
||
</table>
|
||
<p class="sub" style="margin-top:12px">Like the Stage, the click is summed in the <b>analog domain</b>: a high‑impedance
|
||
buffer of the 1/4″ instrument input is mixed with the DAC's click and sent to the 1/4″ output and the monitor
|
||
amp — your instrument is never re‑digitised (no added latency).</p>
|
||
</main>
|
||
|
||
<div class="site-foot">VARASYS · Simplifying Complexity — <span id="appVersion">v0.0.1-dev</span></div>
|
||
|
||
<script>
|
||
const APP_VERSION = "v0.0.1-dev";
|
||
const $ = (id)=>document.getElementById(id);
|
||
try{ $("appVersion").textContent = "v"+APP_VERSION.replace(/^v/,""); }catch(e){}
|
||
const THEMES=["system","light","dark"];
|
||
function effectiveTheme(p){ return p==="system" ? (matchMedia("(prefers-color-scheme: light)").matches?"light":"dark") : p; }
|
||
function themePref(){ try{ const p=localStorage.getItem("metronome.theme"); return (p==="light"||p==="dark"||p==="system")?p:"system"; }catch(e){ return "system"; } }
|
||
function applyTheme(p){ try{ localStorage.setItem("metronome.theme",p); }catch(e){}
|
||
document.documentElement.dataset.theme = effectiveTheme(p);
|
||
$("themeBtn").textContent = p==="system" ? "◐" : p==="light" ? "☀" : "☾"; $("themeBtn").title="Theme: "+p; }
|
||
$("themeBtn").onclick = ()=> applyTheme(THEMES[(THEMES.indexOf(themePref())+1)%THEMES.length]);
|
||
matchMedia("(prefers-color-scheme: light)").addEventListener("change", ()=>{ if(themePref()==="system") applyTheme("system"); });
|
||
applyTheme(themePref());
|
||
</script>
|
||
<script src="/embed.js"></script>
|
||
</body>
|
||
</html>
|