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Integrate ImpedenceFinder closed-form Z0 into the project Impedance tab.

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Use the vendored Hammerstad-Jensen/Cohn engine for microstrip, stripline, and coupled-diff advice. Skip OpenEMS/pcbnew and refuse CPWG rather than inventing a number.

Co-authored-by: Cursor <cursoragent@cursor.com>
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michele
2026-09-10 23:14:57 +02:00
co-authored by Cursor
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frontend/content/changelog.md
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What's new in Pinscope.
## 2.18.0 — 2026-09-10 — ImpedenceFinder calculator
The Impedance tab uses the closed-form engine from ImpedenceFinder (Hammerstad–Jensen / Cohn), not a second formula set and not OpenEMS.
- [New] Project tab Impedance: microstrip, stripline, coupled-diff Z0, stackup → 50/90/100 Ω widths, download `.kicad_dru` advice.
- [New] Vendored ImpedenceFinder core under `vendor/impedancefinder/` (no gerber2ems, no pcbnew).
- CPWG stays unimplemented — no invented number.
## 2.17.0 — 2026-09-10 — Lifecycle and datasheet extras
Distributor lifecycle is a cached check, not a review scrape. Errata and layout_rules stay structured and skip when the catalog or the PDF has no number.