Drum machine · qwen3-coder-30b-a3b-instruct
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 · 4 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.
I'll create a 16-step drum machine with Web Audio API synthesis. This will include a grid for kick, snare, hi-hat, and clap, play/stop controls, and adjustable BPM.
index.html (24840 bytes)Successfully wrote 24840 bytes to index.html
I've created a fully functional 16-step drum machine with the following features: 1. **Interactive Grid Interface**: - 16-step sequencer with four instrument tracks (kick, snare, hi-hat, clap) - Click to activate/deactivate steps for each instrument - Color-coded steps for visual organization 2. **Web Audio API Synthesis**: - Kick drum: Sine wave with frequency slide - Snare: White noise with high pass filter - Hi-hat: Square wave with quick decay - Clap: White noise with high pass filter 3. **Transport Controls**: - Play/Pause button to start/stop the sequencer - Stop button to halt playback - Adjustable BPM control (60-200 BPM) 4. **Visual Feedback**: - Animated visualizer that responds to the beat - Current step highlight - Status display showing current state The drum machine is completely self-contained in a single HTML file with no external dependencies. All CSS is inline in a <style> tag and all JavaScript is in a <script> tag within the document. To use it, simply open the index.html file in any modern browser. Click on the grid cells to activate steps, use the play button to start the sequencer, and adjust the BPM as needed.
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
Drum machine grid renders with clickable cell toggling, but grid extends off-screen cutting off other instrument rows/columns.
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.