6 Commits

Author SHA1 Message Date
7e10b87a13 Color-code resistor zigzag symbols with standard 4-band colors
Map physical resistor color bands onto the IEEE zigzag schematic symbol.
Each sub-segment is colored to match its band (digit, multiplier, tolerance),
with wire-colored entry/exit and a gap before tolerance mimicking real spacing.
Parseable values 0.01–1GΩ get color; parametric/out-of-range fall back to mono.
2026-02-20 17:36:50 -07:00
4b2ce896b5 Replace static hero scope with interactive XY-mode oscilloscope
Port the OscilloscopeDisplay from mcltspice docs — Web Audio API
renders stereo audio as Lissajous patterns on a canvas with teal
phosphor persistence. 6 tracks from Jerobeam Fenderson, volume
knob, skin switcher (465/545A), and the Outer Limits easter egg.

Audio: CC BY-NC-SA 4.0, oscilloscopemusic.com
Visual: Nick Watton (codepen.io/2Mogs), rsp2k
2026-02-20 16:25:13 -07:00
1e08be4409 Add /llms.txt API reference and POST /api/notebooks/compose endpoint
Machine-readable API docs at /llms.txt for LLM collaboration on circuit
design notebooks linked from Mims Electronics Reference Library.

Compose endpoint creates fully-populated notebooks in one call with
optional SPICE simulation. Per-cell try/except ensures partial simulation
failures don't lose the notebook.

Also extracts get_engine to spicebook.engine and makes
generate_notebook_id a public API.
2026-02-14 15:43:26 -07:00
7d5d1b2d31 Use @fontsource/inter woff for OG renderer instead of broken TTF download
The Inter SemiBold TTF from GitHub was an HTML error page. Switch to
loading inter-latin-600-normal.woff from @fontsource/inter in
node_modules — always available, always valid, and Satori supports
woff natively.
2026-02-14 13:30:43 -07:00
c9116c5d86 Add SEO meta tags, OG image generation, and astro-icon integration
Wire astro-seo-meta for OG, Twitter Card, and canonical tags on all
pages. Add Satori + resvg dynamic OG image endpoints at /og/[id].png
with branded dark-theme cards. Replace inline SVGs with zero-JS
astro-icon rendering. SSR fetches use 5s AbortController timeout and
shared ID validation across all dynamic routes.
2026-02-14 13:15:52 -07:00
8abd7719bf Initial SpiceBook MVP: notebook interface for circuit simulation
Phase 1 implementation with ngspice backend and Astro/React frontend:

Backend (FastAPI):
- ngspice subprocess engine with custom .raw file parser
- Notebook CRUD with .spicebook JSON format (filesystem storage)
- Simulation endpoints (standalone + cell-in-notebook)
- SVG waveform export endpoint
- 18 REST API routes, 5 passing tests

Frontend (Astro 5 + React 19):
- Notebook editor as React island with Zustand state management
- CodeMirror 6 with custom SPICE language mode (syntax highlighting
  for dot commands, components, engineering notation, comments)
- uPlot waveform viewer with transient and AC/Bode plot modes
- Markdown cells with edit/preview toggle
- Notebook list with card grid UI
- Dark theme, Tailwind CSS 4, Lucide icons

Infrastructure:
- Docker Compose with dev/prod targets
- Caddy-based frontend prod serving
- 3 example notebooks (RC filter, voltage divider, CE amplifier)
2026-02-13 01:44:38 -07:00