# Hero Oscilloscope

> A full-width animated oscilloscope hero built with Canvas 2D that draws a summed three-harmonic waveform as a continuous box-drawing trace inside an instrument-style frame, where moving the pointer over it injects energy into a real damped wave simulation that ripples outward and settles back down.

- Author: [nikolas-sapa](https://21st.dev/@nikolas-sapa)
- Library: @ns-ui
- License: MIT
- Tags: Canvas, Hero, Ascii, Waveform
- Live preview: https://21st.dev/@nikolas-sapa/components/hero-oscilloscope

## Install

```bash
npx shadcn@latest add "https://21st.dev/r/nikolas-sapa/hero-oscilloscope?api_key=$API_KEY_21ST"
```

Requires a 21st API key (generate one at https://21st.dev/mcp) passed as `API_KEY_21ST`. Free accounts get a limited number of installs per day; unlimited on a paid plan — see https://21st.dev/pricing.

Full component directory: https://21st.dev/llms.txt · More like this: https://21st.dev/community/components/s/canvas.md