Arpeggiator pad · grok-4.20
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 · 6 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 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 ...
{"command":"ls -la"}total 344 drwxr-sr-x. 2 node node 25 Aug 1 19:40 . drwxrwsrwx. 3 root node 16 Aug 1 19:40 .. -rw-r--r--. 1 node node 349169 Aug 1 19:40 tone.min.js
thinking
The task is to build a single-page web app in one self-contained file named index.html. It must include CSS in a <style> tag, JS in a <script> tag, all inline. Use the pre-provided tone.min.js with <s...The task is to build a single-page web app in one self-contained file named index.html. It must include CSS in a <style> tag, JS in a <script> tag, all inline. Use the pre-provided tone.min.js with <script src="tone.min.js"></script>. No external resources.
It needs:
- A clickable pentatonic pad grid that triggers a synth voice with reverb.
- A play/stop button that runs an arpeggiator sequence at an adjustable tempo.
All sound synthesized, no audio files.
I need to create index.html with HTML, CSS, JS inline, and include <script src=" tone.min.js"></script> but wait, tone.min.js is pre-provided, but since it's self-contained, perhaps assume it's available or include it? The task says "use the pre-provided tone.min.js", but for the file, probably link it, but says no external, wait.
"Use the pre-provided tone .min.js (global Tone)", and "No external resources, CDNs, or network requests." So probably the tone.min.js is to be assumed or perhaps the file includes it, but I think for the answer, we write index.html that references it, but task says no network requests, so maybe tone.min.js is to be inlined too, but that's huge. Probably the app is index.html with script src to tone.min.js but since self-contained, perhaps it's ok as it's pre-provided.
Anyway, I need to build the code for index.html.
Let's plan the code.
First, HTML structure:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Pentatonic Pad</title>
<style>
/* CSS here */
body { background: #000; color: #fff; font-family: Arial; margin:0; padding:0; }
.container { max-width: 800px; margin: 20px auto; text-align: center; }
h1 { color: #0ff; text-shadow: 0 0 10px #0ff; }
.controls { margin: 20px; }
#playBtn { padding: 10px 20px; font-size: 18px; background #f0f; border: none; color: #000; cursor: pointer; }
#bpm { width: 200px; }
.grid { display: grid; grid-template-columns: repeat(5, 80px); gap: 10px; margin: 20px auto; width: fit-content; }
.pad { width: 80px; height: 80px; background: #222; border: 1px solid #444; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 12px; color: #fff cursor: pointer; transition: all 0.2s; }
.pad.active { background: #0f0; transform: scale(1.05); box-shadow: 0 0 20px #0f0; }
.footer { font-size: 12px; color: #888; }
</ style>
</head>
<body>
<div class="container">
<h1>PENTAPAD</h1>
<div class="controls">
<button id="playBtn">PLAY</button>
<span id="bpmVal">120</span> BPM
<input type="range" id="bpm" min="60" max="200" value="120">
</div>
<div class="grid" id="grid"></div>
<div class="footer">Pentatonic Pad with Tone.js Reverb and Arp</div>
</div>
<script src="tone.min.js"></script>
<script>
// JS here
const grid = document.getElement id('grid');
const playBtn = document.getElementById('playBtn');
const bpmSlider = document.getElementById('bpm');
const bpmVal = document.index.html (15898 bytes)Successfully wrote 15898 bytes to index.html
thinking
The task is complete. I have created a single self-contained index.html file that includes:
The app has been built and written to **index.html**. Open it in a browser (click pads or hit Play to start audio context). It uses the preloaded `tone.min.js` for all synthesized sound (PolySynth + Reverb + Transport/Sequence), with a retro neon clickable 4×5 pentatonic grid, live BPM control, and arpeggiator. Fully self-contained.
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 play/stop arp button and BPM slider; pads light up on click and arp runs, visually clean.
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.