Drum machine · claude-opus-5
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.
transcript · 6 messages
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.
thinking
I'm building a single-file drum machine with a grid layout, synthesized sounds, play and stop controls, adjustable BPM, swing timing, and volume control.
/tmp/ws/index.html (12611 bytes)Successfully wrote 12611 bytes to /tmp/ws/index.html
thinking
I need to fix a typo in the hover state styling where the border color has a malformed hex value.
{"path":"/tmp/ws/index.html","edits":[{"oldText":" .cell:hover{border-color:#4a5near}\n","newText":""}]}Successfully replaced 1 block(s) in /tmp/ws/index.html.
`/tmp/ws/index.html` — done. - 4×16 clickable grid (kick, snare, hi-hat, clap) with beat shading, per-lane clear, and click-to-preview track names - All voices synthesized: sine pitch-drop kick, noise+tone snare, filtered noise hat, multi-burst clap; routed through a compressor + master gain - Play/Stop with lookahead scheduler, BPM 50–200, swing, volume, Clear/Random, keyboard shortcuts (Space/C/R), moving playhead
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
Step-sequencer drum machine; play/stop toggles via space/enter, click added a beat, arrows/wasd show playhead moving but don't navigate grid.
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.