Drum machine · gemini-3-flash-preview

Output generated Cost / run $0.0144 Runtime 25.3s

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.

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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

modelgemini-3-flash-preview

vendorGoogle

harnesspi-agent

generated2026-07-22

METRICS

runtime25.3s

tokens in5.8k

tokens out3.8k

cached0

cost / run$0.0144

Transcript · 4 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

**Building Drum Machine Grid**

I'm focusing on constructing the interactive 16-step grid for the drum machine in `index.html`. This involves setting up the visual layout with four instrument rows and implementing click handlers for each step. My next step is to integrate Web Audio API for synthesized sounds.

→ write index.html (10508 bytes)

toolResult

Successfully wrote 10508 bytes to index.html

assistant

thinking

**Building Core Functionality**

I've successfully implemented the foundational elements, including a 16-step grid for four distinct drum sounds and integrated Web Audio API for synthesis. Playback and stop controls are now operational, and I'm refining parameter adjustments.

The 16-step drum machine has been built into a single, self-contained `index.html` file. It features: - **Synthesized Sounds**: Uses the Web Audio API to generate Kick, Snare, Hi-hat, and Clap sounds from scratch (no external samples). - **16-Step Sequencer**: A clickable grid where you can toggle beats for each instrument. - **Transport Controls**: Play and Stop functionality with a visual cursor tracking the current step. - **BPM Control**: Adjustable tempo ranging from 60 to 180 BPM. ### How to use: 1. Open `index.html` in any modern web browser. 2. Click the squares in the grid to program a pattern. 3. Use the **BPM** slider to change the speed. 4. Click **Play** to start the sequencer. The file `index.html` is now available in the current directory.