Arpeggiator pad · grok-build-0.1
Using the pre-provided tone.min.js (global Tone), build a clickable pentatonic pad grid that triggers a synth voice with reverb, plus a play/stop button that runs an arpeggiator sequence at an adjustable tempo. All sound synthesized, no audio files.
transcript · 10 messages
Using the pre-provided tone.min.js (global Tone), build a clickable pentatonic pad grid that triggers a synth voice with reverb, plus a play/stop button that runs an arpeggiator sequence at an adjustable tempo. All sound synthesized, no audio files.
thinking
The task is: Build a single-page web app and write it ALL into one self-contained file named index.html in the current directory. CSS in a <style> tag, JS in a <script> tag, inline — do not create sep...
{"command":"ls -la"}total 344 drwxr-sr-x. 2 node node 25 Aug 1 19:41 . drwxrwsrwx. 3 root node 16 Aug 1 19:41 .. -rw-r--r--. 1 node node 349169 Aug 1 19:41 tone.min.js
thinking
The task is to build a single-page web app in one self-contained file named index.html. It must use the pre-provided tone.min.js (which is Tone.js global Tone), no external resources, CDNs, or network...First, the user wants a single-page web app in index.html, using tone.min.js which I assume is provided, but in the code, use <script src="tone.min.js"></script>.
It has to be self-contained, no external resources.
Clickable pentatonic pad grid that triggers a synth with reverb.
- Synth: use Tone.Synth({oscillator: {type: 'sine'}}) or something, with reverb.
- Reverb: Tone.Reverb({decay: 4, wet: 0.5})
- Connect: synth.connect(reverb); reverb.toDestination();
Play/stop button that runs arpeggiator at adjustable tempo.
- Arpeggiator: use Tone.Sequence or Tone.Arpeggiator, but for sequence, perhaps a sequence that plays chords or arps.
- Arpeggiator typically plays notes in arpeggio pattern.
- Say, cycle through the pentatonic 5 notes in order, up/down.
- Adjustable tempo: slider for BPM.
All sound synthesized, no files.
Use exact <script src="tone.min.js"></script>
CSS in style, JS in script.
End with index.html present.
I need to build the HTML code.
Let me sketch the code.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Pentatonic Pad Synth</title>
<style>
body { background: #1a1a1a; color: white; font-family: Arial, sans-serif; text-align: center; }
h1 { color: #ff6b6b; }
.grid { display: grid; grid-template-columns: repeat(5, 80px); gap: 10 10px; margin: 20px auto; width: 500px; }
.pad { width: 80px; height: 80px; background: #333; border: 2px solid #555; display: flex; align-items: center; justify-content: center; cursor: pointer ; font-size: 12px; transition: background 0.2s; }
.pad.active { background: #ff6b6b; }
.pad:hover { background: #555; }
.controls { margin: 20px; }
button { padding: 10px 20px; font-size: 16px; background: #ff6b6b; border: none; color: white; cursor: pointer; }
button:hover { background: #ff4b4b; }
.tempo { margin: 10px; }
input[type="range"] { width: 300px; }
.note { font-size: 10px; color: #aaa; }
</style>
</head>
<body>
<h1>Pentatonic Pad Synth</h1>
<div class="grid" id="grid"></div>
<div class="controls">
<button id="playBtn">Play</button>
<div class="tempo">
<label for="tempo">Tempo: <span id="bpmVal">120</span> BPM</label>
<input type="range" id="tempo" min="60 max="200" value="120" step="5">
</div>
</div>
<script src="tone.min.js"></script>
<script>
// JS code here
const grid = document.getElementById('grid');
const playBtn = document.getElementById(' playBtn');
const tempoSlider = document.getElementById('tempo');
const bpmVal = document.index.html (9912 bytes)Successfully wrote 9912 bytes to index.html
thinking
The file is written. I should verify that it works correctly by checking if everything is in place. The instructions say to use the pre-provided tone.min.js with a plain <script src="NAME"></script>, ...
{"command":"ls -la && head -n 30 index.html && echo \"...\" && tail -n 10 index.html"}total 356 drwxr-sr-x. 2 node node 43 Aug 1 19:42 . drwxrwsrwx. 3 root node 16 Aug 1 19:41 .. -rw-r--r--. 1 node node 9924 Aug 1 19:42 index.html -rw-r--r--. 1 node node 349169 Aug 1 19:41 tone.min.js <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Pentatonic Pads</title> <style> :root { --bg: #0f0f14; --panel: #1a1a22; --pad: #252530; --pad-border: #3a3a48; --text: #e0e0e8; --accent: #00e5c4; --accent-dark: #00b89c; --active: #ff4d94; } * { box-sizing: border-box; margin: 0; padding: 0; } body { font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px; } .app { width: 100%; ... // Optional: prime audio graph on first interaction hint // (will be initialized on first pad or play click) console.log('%c[Pentatonic Pads] Ready. Click pads or press Play. All sounds generated with Tone.js', 'color:#444'); } // Start window.onload = init; </script> </body> </html>
thinking
The file is created and complete. It uses tone.min.js as a plain script src. Everything is self-contained in index.html. No external resources.
{"command":"grep -E \"(tone\\.min|script src)\" index.html | head -5"}<script src="tone.min.js"></script>
thinking
The file is complete. It includes:
Done. `index.html` created with: - 15 clickable pads (C-D-E-G-A across 3 octaves) - Triangle synth + reverb (wet 38%, decay 2.8s) - Arpeggiator using `Tone.Sequence` on `Tone.Transport` - Live-adjustable BPM (40–240) via slider - Play/stop button + keyboard shortcuts (Space = toggle, Esc = stop) - All pads flash when triggered - Loads `tone.min.js` locally with `<script src="tone.min.js">` - Zero external resources / CDNs Open `index.html` in a browser to use.
TAKE IT TO CODE
A single self-contained HTML file — copy it and open in any browser, or reuse the prompt with your own pi-agent run.
RUN
EVALUATION
Pentatonic pad grid with arpeggiator toggle and tempo slider; clicks and keys highlight pads and start/stop playback.
Vision grade · anthropic/claude-sonnet-5
MEASUREMENTS
Raw readings from the capture, not a verdict — the grade above is the only judgement. Percentages are how much of the screen changed; the measure under-reports sparse motion on a dark background.