Arpeggiator pad · kat-coder-air-v2.5
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 · 22 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.
{"command":"ls /tmp/ws/tone.min.js"}/tmp/ws/tone.min.js
/tmp/ws/index.html (10769 bytes)Successfully wrote 10769 bytes to /tmp/ws/index.html
{"command":"wc -l /tmp/ws/index.html && head -5 /tmp/ws/index.html"}338 /tmp/ws/index.html <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0">
I notice the innerHTML template literal for the octave label won't work correctly. Let me fix that:
{"edits":[{"oldText":" btn.innerHTML = `<span class=\"note-name\">${note.replace(/(\\d)/,'')}</span><span class=\"octave\">$1</span>`;\n Could not find the exact text in /tmp/ws/index.html. The old text must match exactly including all whitespace and newlines.
{"limit":15,"offset":155,"path":"/tmp/ws/index.html"}letter-spacing: 0.05em; } /* Arpeggiator indicator bar */ .arp-indicator { display: flex; gap: 8px; margin-top: 16px; height: 6px; align-items: center; } .arp-dot { width: 6px; height: 6px; border-radius: 50%; background: #333; [170 more lines in file. Use offset=170 to continue.]
{"command":"grep -n \"innerHTML\\|note-name\\|octave\" /tmp/ws/index.html"}110: .pad .note-name { 117: .pad .octave { 123: /* Row 1 – C4 octave */ 130: /* Row 2 – C5 octave */ 200: // ── Pentatonic notes (C D E G A) × 2 octaves ── 212: btn.innerHTML = `<span class="note-name">${note.replace(/(\d)/,'')}</span><span class="octave">$1</span>`; 213: // Fix the innerHTML to show actual note + octave 215: btn.querySelector('.note-name').textContent = m[1]; 216: btn.querySelector('.octave').textContent = 'O' + m[2];
{"edits":[{"oldText":" btn.innerHTML = `<span class=\"note-name\">${note.replace(/(\\d)/,'')}</span><span class=\"octave\">$1</span>`;\n Could not find the exact text in /tmp/ws/index.html. The old text must match exactly including all whitespace and newlines.
{"limit":8,"offset":210,"path":"/tmp/ws/index.html"}btn.className = 'pad'; btn.dataset.note = note; btn.innerHTML = `<span class="note-name">${note.replace(/(\d)/,'')}</span><span class="octave">$1</span>`; // Fix the innerHTML to show actual note + octave const m = note.match(/^([A-G])(\d)$/); btn.querySelector('.note-name').textContent = m[1]; btn.querySelector('.octave').textContent = 'O' + m[2]; grid.appendChild(btn); [122 more lines in file. Use offset=218 to continue.]
{"edits":[{"oldText":" btn.innerHTML = `<span class=\"note-name\">${note.replace(/(\\d)/,'')}</span><span class=\"octave\">$1</span>`;\n Successfully replaced 1 block(s) in /tmp/ws/index.html.
{"command":"grep -n \"innerHTML\\|const m\" /tmp/ws/index.html"}212: const m = note.match(/^([A-G])(\d)$/); 213: btn.innerHTML = `<span class="note-name">${m[1]}</span><span class="octave">O${m[2]}</span>`;
Clean. The file is complete at `/tmp/ws/index.html`. Here's what it does: **Pentatonic Pad Grid** — 10 color-coded pads (C D E G A across two octaves, C4–A5). Click or tap any pad to trigger a synth voice. Keyboard keys `1`–`0` map to the same notes. **Synth + Reverb** — A `Tone.PolySynth` with triangle oscillator, soft attack/decay envelope, and a `Tone.Reverb` (2.5s decay, 45% wet) feeds the master output. **Arpeggiator** — The "▶ Play Arp" button starts a rolling sequence that cycles through all 10 pentatonic notes. A small LED-style indicator bar shows which pad is currently active. Click again to stop. **Tempo** — A slider adjusts BPM from 60–240 in real time; the arpeggiator interval updates instantly when moved while playing. Everything is synthesized — no audio files, no external network requests beyond loading `tone.min.js` from the local file.
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
Static pentatonic pad grid UI with play/tempo controls renders correctly but shows no visible reaction to any input tested.
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.