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Author SHA1 Message Date
David Montero Crespo 04d14a74b2 feat: always-on SPICE mode, full board ADC integration, LED brightness from current 
Electrical simulation is now active by default (mode='spice' instead of
'off') — users no longer need to toggle the mode on manually. The engine
lazy-loads on first solve, so there is no startup cost penalty.

Changes:
- useElectricalStore: default mode = 'spice' when ELECTRICAL_SIM_ENABLED
- subscribeToStore: ADC_PIN_MAP expanded to all 18 board types (Uno, Nano,
  Mega with 16 ADC channels, ATtiny85, RP2040 GP26-29, ESP32/S3/C3 GPIO
  ADCs). Voltages from SPICE solutions now inject into MCU ADC peripherals
  for all boards.
- BasicParts LED: reads branchCurrents from useElectricalStore when SPICE
  is active. Brightness = clamp(|I_led| / 20mA, 0, 1) instead of boolean.
  Subscribes to store changes to update in real time.
- ElectricalOverlay: shows per-wire voltage labels (gold monospace on dark
  pill) using buildWireNetMap() which replicates the NetlistBuilder's
  Union-Find to map wireId -> netName -> nodeVoltage. Summary pill shows
  net count + solve time.
- NetlistBuilder: new export buildWireNetMap() for lightweight wire-to-net
  resolution without running ngspice.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-15 22:59:22 -03:00
davidmonterocrespo24 ed9911dcc3 feat: electrical simulation via ngspice-WASM (eecircuit-engine) 
Adds full SPICE-accurate electrical simulation to Velxio, behind a lazy-
loaded ⚡ toolbar toggle. Arduino / ESP32 / RP2040 sketches now co-simulate
with real analog behaviour: correct voltages on wires, real I–V curves on
LEDs, working potentiometers, NTC thermistors read by analogRead(), PWM
driving RC filters, transistors, op-amps, diodes, MOSFETs, etc.

Engine: eecircuit-engine (ngspice compiled to WebAssembly). Main bundle
stays at 2.4 MB; the 20 MB SPICE chunk only loads when the user activates
electrical mode. Disabled at build time via VITE_ELECTRICAL_SIM=false.

Frontend additions:
- simulation/spice/: SpiceEngine wrapper + lazy entry, NetlistBuilder with
  UnionFind over wires, componentToSpice mapping (24 metadataIds incl.
  real part numbers: 2N2222, 2N3055, BC547, IRF540, 2N7000, 1N4148,
  1N4007, 1N4733, LEDs, NTC, op-amp ideal), CircuitScheduler with
  debounced coalescing, AVRSpiceBridge for quasi-static co-simulation.
- store/useElectricalStore: Zustand slice, feature-flag aware.
- components/analog-ui/: ⚡ toolbar toggle + SVG voltage overlay.
- components/components-instruments/: Voltmeter, Ammeter probes.
- 62 tests (spice-*, netlist-builder, component-to-spice, instruments).

Sandbox (test/test_circuit/): 47-test validation sandbox that proved
the approach (hand-rolled MNA baseline + ngspice pipeline) before
porting to the app. Kept as reference.

Docs: docs/wiki/circuit-emulation-*.md (13 engineering pages covering
architecture, solvers, components, AVR bridge, gotchas, performance,
integration plan, API reference, appendix) + electrical-simulation-
user-guide.md (end-user facing).

Reference plan: test/test_circuit/plan/phase_8_velxio_implementation.md

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-15 12:11:54 +00:00