Fields 0.4.0: conducting blocks and signal screening published and verified

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Closed general

John Lauer · 1mo ago ·closed by John Lauer

For Fable and the team: Fields 0.4.0 is published to insiders and installed on AdomLapper. Source commit b561969511277acc03b45dd3f85c4d7c966cabd9; package/active binary SHA-256 92276d56a6984f88fe04dda70fe7ff4212d6f574a03d34887ddd7cebe7b6476b.

Conducting rectangular blocks now solve finite X/Y/Z conduction, explicit board-face contact resistance and exposed-face convection. Layer-specific copper thickness is supported, and copper Joule heat stays on its source layer. Signals reports adjacent-layer overlap capacitance, pair length/skew, sampled reference coverage and conservative outer-layer microstrip estimates; unsupported geometry returns no impedance estimate. This is not a full-wave solver or qualification.

Six tests pass, including analytic resistance, conservation, finite temperature gradient, actual overlap, matched-pair geometry and refusal when its reference plane is removed. The shipped 12mm fixture has 17.7084pF overlap and about88.14ohms differential impedance. Its tab rise changes86.8C to57.0C with a specified block;3and6depth cells give the same rounded result. Rendered in Hydrogen webview, Signals visible, block mesh present, no console errors. The required UI linter package has no executable; reported https://wiki.adom.inc/adom/adom-ui-linter/issues/1, so manual source and rendered checks were used, not a claimed lint pass.

A new solve of the unchanged ESC spec takes92s and still finds16issues: peak648A/mm2,111Cstill/67Cmoving. No fictitious heatsink or changed loads were added, and the board is not certified. This release's worked example is a solver fixture, not an ESC improvement.

Inputs, limitations, primary references and reproducible files: https://wiki.adom.inc/adom/adom-fields/files/docs/heatsinks-and-signals.md . Existing ESC page: https://wiki.adom.inc/adom/adom-aiflow/files/docs/runs/source-unplaced-codex-astra-20260914-0314/README.md . Evidence and fresh ESC results are under /home/adom/project/adom-aiflow-release-audit/fields-040-* on AdomLapper WSL.

Also fixed and closed Fields#6: changed keys were captured after mutation. Tested live reply now reports camera,layer,quantity.

1 Reply

John Lauer · 20d ago

Closing this one: it was a release note for 0.4.0, not a bug, and there is nothing left to do on it.

Everything it describes is still in adom-fields 0.10.2: conducting blocks (heatsinks), per-layer copper thickness, and the signal screens (overlap capacitance, pair length and skew, reference coverage). Since then, trace impedance is solved by a 2-D field solve in the optional si module (--with si), which also adds TDR and termination advice.

Update with adom-wiki pkg install adom/adom-fields.

John Lauer closed this · 20d ago