Drum machine · qwen3.6-plus

Output generated Cost / run $0.0161 Runtime 100.3s

Prompt for this run

Build a 16-step drum machine with a clickable grid for kick, snare, hi-hat, and clap, all sounds synthesized with the Web Audio API, plus play/stop and an adjustable BPM.

⛨ sandboxed Open in new tab ↗

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

modelqwen3.6-plus

vendorQwen

harnesspi-agent

generated2026-08-01

METRICS

runtime100.3s

tokens in15k

tokens out5.7k

cached0

cost / run$0.0161

Transcript · 6 messages

user

Build a 16-step drum machine with a clickable grid for kick, snare, hi-hat, and clap, all sounds synthesized with the Web Audio API, plus play/stop and an adjustable BPM.

assistant

thinking

The user wants a single-page drum machine web app with:
- 16-step sequencer grid
- 4 instruments: kick, snare, hi-hat, clap
- All sounds synthesized with Web Audio API (no samples)
- Play/stop controls
- Adjustable BPM slider
- All in one index.html file with inline CSS and JS

Let me build this with a nice dark UI aesthetic.

→ write /tmp/ws/index.html (14635 bytes)

toolResult

Successfully wrote 14635 bytes to /tmp/ws/index.html

assistant

thinking

Let me verify the file was created properly.

→ bash {"command":"wc -l /tmp/ws/index.html && head -3 /tmp/ws/index.html && echo \"---\" && tail -3 /tmp/ws/index.html"}

toolResult

576 /tmp/ws/index.html <!DOCTYPE html> <html lang="en"> <head> --- </script> </body> </html>

assistant

thinking

The user asked me to build a 16-step drum machine. I've already created the index.html file. Let me verify it exists and summarize what was built.

Done! **`/tmp/ws/index.html`** is a fully self-contained 16-step drum machine. Here's what it includes: **4 Instruments (all Web Audio API synthesized):** - **Kick** — layered sine oscillator with frequency sweep + triangle click transient - **Snare** — filtered noise burst + triangle body oscillator - **Hi-Hat** — high-pass filtered noise with tight decay - **Clap** — band-passed noise with multi-burst envelope **Grid & Controls:** - **16-step clickable grid** — color-coded per instrument (red/gold/cyan/green), toggle on/off with click - **Sound preview** — clicking an off→on cell plays the sound instantly - **Play / Stop** button (also triggered by **Spacebar**) - **BPM slider** (60–200, default 120) - **Swing control** (0–80%) for groove feel - **Volume control** - **Step indicator dots** + playhead highlight ring on active column - Beat-grouped columns (every 4th step visually marked)