KiCad/kicad-source-mirror
Sep 2025 – Jun 2026
10 Months active
Languages Used
C++CMakePythonShellwxWidgetsCMarkdownCMakeLists.txt
Technical Skills
C++ DevelopmentEDA ToolsSchematic CaptureSoftware ArchitectureUnit TestingCodebase Management
Seth Hillbrand
PROFILE
Seth Hillbrand
Over ten months, contributed extensively to KiCad/kicad-source-mirror, delivering 85 features and 65 bug fixes focused on EDA tooling, net chain management, and cross-tool interoperability. Developed robust net chain data models, DRC enhancements, and cross-editor synchronization, enabling granular design rule checks and persistent signal grouping across schematic and PCB editors. Expanded import/export capabilities with deterministic DipTrace and Protel Autotrax support, and improved manufacturing readiness through ODB++ export. Leveraged C++ and Python for backend development, file format parsing, and API design, while reinforcing reliability with comprehensive testing, CI integration, and UI/UX improvements. Work emphasized maintainability, automation readiness, and domain-aligned terminology.
Overall Statistics
Feature vs Bugs
57%Features
Repository Contributions
161Total
Bugs
65
Commits
161
Features
85
Lines of code
328,057
Activity Months10
Your Network
43 peopleSame Organization
@kipro-pcb.com1
Damjan PreradMember
Shared Repositories
42
JamesJCodeMember
2tama3Member
Simeon VölkelMember
Akhil VelagapudiMember
AlanCuiMember
alufersMember
Armin SchoisswohlMember
Jan StrakaMember
Bojan PejicMember
Work History
June 2026
66 Commits • 28 Features
Jun 1, 2026June 2026 performance summary for KiCad/kicad-source-mirror: Focused on expanding cross-tool data interoperability, robustness, and manufacturing readiness. Delivered major DipTrace data integration capabilities with parser updates and comprehensive import of wires, junctions, and sheet hierarchies, plus header-based component scanning. Introduced deterministic DipTrace binary import and extensive DipTrace feature support to improve data fidelity and import reliability. Enhanced library handling and editing UX with targeted tokenization optimization and tabbed editors, enabling faster workflows. Added ODB++ dimension export to streamline manufacturing handoff. Strengthened reliability through key bug fixes (autosave prompts for identical content, lockfile handling, and stackup reconciliation on load) and CI/stability improvements. Technologies demonstrated include cross-tool data translation, deterministic parsing, per-layer geometry import, UI/UX enhancements, and improved QA/CI resilience.
66 Commits • 28 Features
Jun 1, 2026June 2026 performance summary for KiCad/kicad-source-mirror: Focused on expanding cross-tool data interoperability, robustness, and manufacturing readiness. Delivered major DipTrace data integration capabilities with parser updates and comprehensive import of wires, junctions, and sheet hierarchies, plus header-based component scanning. Introduced deterministic DipTrace binary import and extensive DipTrace feature support to improve data fidelity and import reliability. Enhanced library handling and editing UX with targeted tokenization optimization and tabbed editors, enabling faster workflows. Added ODB++ dimension export to streamline manufacturing handoff. Strengthened reliability through key bug fixes (autosave prompts for identical content, lockfile handling, and stackup reconciliation on load) and CI/stability improvements. Technologies demonstrated include cross-tool data translation, deterministic parsing, per-layer geometry import, UI/UX enhancements, and improved QA/CI resilience.
June 2026
May 2026
76 Commits • 47 Features
May 1, 2026May 2026 – KiCad/kicad-source-mirror: Core net-chains improvements focused on reliability, correctness, and automation readiness. Delivered membrane of net-chain polish, stabilized data models, reinforced DRC paths, and persistence/automation through JSON serialization and public APIs. Cross-repo value includes headless loader enhancements, cross‑platform build stability (MSVC, wxWidgets 3.3), and improved error reporting. Business impact: fewer debugging cycles for net-chain issues, more predictable nets and designs, and stronger tooling integration for automation and CI pipelines.
May 2026
76 Commits • 47 Features
May 1, 2026May 2026 – KiCad/kicad-source-mirror: Core net-chains improvements focused on reliability, correctness, and automation readiness. Delivered membrane of net-chain polish, stabilized data models, reinforced DRC paths, and persistence/automation through JSON serialization and public APIs. Cross-repo value includes headless loader enhancements, cross‑platform build stability (MSVC, wxWidgets 3.3), and improved error reporting. Business impact: fewer debugging cycles for net-chain issues, more predictable nets and designs, and stronger tooling integration for automation and CI pipelines.
April 2026
4 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary for KiCad/kicad-source-mirror focusing on delivering a robust Net Chain management experience and aligning terminology with domain concepts. Key features delivered include the Net Chain Editor with API support for removing and renaming net chains, plus a new panel for managing net chains and their classes. A bug/cleanup effort standardized terminology by renaming all instances of 'signal' to 'net chain' across the codebase, with no functional changes. These changes reduce manual steps in schematic setup, improve consistency across the project, and provide stable, external-friendly APIs via the CONNECTION_GRAPH for programmatic chain mutations.
4 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary for KiCad/kicad-source-mirror focusing on delivering a robust Net Chain management experience and aligning terminology with domain concepts. Key features delivered include the Net Chain Editor with API support for removing and renaming net chains, plus a new panel for managing net chains and their classes. A bug/cleanup effort standardized terminology by renaming all instances of 'signal' to 'net chain' across the codebase, with no functional changes. These changes reduce manual steps in schematic setup, improve consistency across the project, and provide stable, external-friendly APIs via the CONNECTION_GRAPH for programmatic chain mutations.
April 2026
March 2026
2 Commits • 1 Features
Mar 1, 2026March 2026 (KiCad/kicad-source-mirror): Delivered a comprehensive Net Chain terminology rename across UI, docs, and internal logic, aligning user-facing language with underlying code. Implemented updates to constraints and predicates related to net chains and refreshed documentation to reflect the new terminology and usage rules. The work reduces ambiguity, improves maintainability, and provides a tighter integration between design rules and the UI.
March 2026
2 Commits • 1 Features
Mar 1, 2026March 2026 (KiCad/kicad-source-mirror): Delivered a comprehensive Net Chain terminology rename across UI, docs, and internal logic, aligning user-facing language with underlying code. Implemented updates to constraints and predicates related to net chains and refreshed documentation to reflect the new terminology and usage rules. The work reduces ambiguity, improves maintainability, and provides a tighter integration between design rules and the UI.
February 2026
2 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for KiCad/kicad-source-mirror focused on expanding import interoperability and stabilizing output formatting across versions. Key delivery includes a DipTrace Importer that enables migrating DipTrace schematic (.dch) and board (.dip) files into KiCad (eeschema/pcbnew) using a common binary reader and verifiable parsers, with cross-version support from pre-v37 to 45+. Robust tests accompany the importer, validating cross-version compatibility and handling of pads, text, and graphical elements. In addition, a bug fix set resolved schema formatting gaps: the Schematic IPC enum and color formatting bugs were addressed, including missing enum values for signal length and net chain constructs and removal of a banned format specifier, with tests for signal class and color overrides. Overall, these changes improve interoperability, reliability, and maintainability of the design import/export pipeline, delivering tangible business value by reducing manual migrations and preventing formatting regressions.
2 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for KiCad/kicad-source-mirror focused on expanding import interoperability and stabilizing output formatting across versions. Key delivery includes a DipTrace Importer that enables migrating DipTrace schematic (.dch) and board (.dip) files into KiCad (eeschema/pcbnew) using a common binary reader and verifiable parsers, with cross-version support from pre-v37 to 45+. Robust tests accompany the importer, validating cross-version compatibility and handling of pads, text, and graphical elements. In addition, a bug fix set resolved schema formatting gaps: the Schematic IPC enum and color formatting bugs were addressed, including missing enum values for signal length and net chain constructs and removal of a banned format specifier, with tests for signal class and color overrides. Overall, these changes improve interoperability, reliability, and maintainability of the design import/export pipeline, delivering tangible business value by reducing manual migrations and preventing formatting regressions.
February 2026
January 2026
1 Commits • 1 Features
Jan 1, 2026January 2026 monthly summary for KiCad/kicad-source-mirror focusing on the Cross-Editor Net Chain Cross-Probing work. Delivered a feature that makes net-chain identity persist through netlists and enables bidirectional cross-probing between schematic and PCB. The change ensures that chain identity, overrides, colors, and class assignments survive the schematic-to-board hand-off and are reflected in both editors.
January 2026
1 Commits • 1 Features
Jan 1, 2026January 2026 monthly summary for KiCad/kicad-source-mirror focusing on the Cross-Editor Net Chain Cross-Probing work. Delivered a feature that makes net-chain identity persist through netlists and enables bidirectional cross-probing between schematic and PCB. The change ensures that chain identity, overrides, colors, and class assignments survive the schematic-to-board hand-off and are reflected in both editors.
December 2025
2 Commits • 1 Features
Dec 1, 2025December 2025 monthly summary for KiCad/kicad-source-mirror focusing on high-impact technical delivery and business value. Delivered DRC Enhancements: stub_length and return_path constraints to enforce high-speed PCB design rules. Implemented as chain-level constraints evaluated by the DRC engine, checking maximum stub lengths and adjacency to a return path for net chains, enabling bus-wide rule coverage. Key commit: 9204d21cac1f779284fe6dff2d505239c0cec0bb. The change reduces signal integrity risk and rework by validating constraints across nets that participate in a chain/bus.
2 Commits • 1 Features
Dec 1, 2025December 2025 monthly summary for KiCad/kicad-source-mirror focusing on high-impact technical delivery and business value. Delivered DRC Enhancements: stub_length and return_path constraints to enforce high-speed PCB design rules. Implemented as chain-level constraints evaluated by the DRC engine, checking maximum stub lengths and adjacency to a return path for net chains, enabling bus-wide rule coverage. Key commit: 9204d21cac1f779284fe6dff2d505239c0cec0bb. The change reduces signal integrity risk and rework by validating constraints across nets that participate in a chain/bus.
December 2025
November 2025
2 Commits • 1 Features
Nov 1, 20252025-11 monthly summary for KiCad/kicad-source-mirror: Delivered chain-level net class DRC targeting, enabling per-chain netclass overrides and new DRC predicates (hasNetChain, inNetChain, inNetChainClass). This work allows granular constraints management for distinct net chains, improving accuracy of design rule checks and reducing rework on complex boards. Commits include two entries for the same change (ad8cb24c006c09562938e6e15ecd7f11bf75707d), both introducing per-chain netclass support and DRC predicates. Impact: foundation for chain-aware constraint governance and easier handling of physical constraints across nets and chains.
November 2025
2 Commits • 1 Features
Nov 1, 20252025-11 monthly summary for KiCad/kicad-source-mirror: Delivered chain-level net class DRC targeting, enabling per-chain netclass overrides and new DRC predicates (hasNetChain, inNetChain, inNetChainClass). This work allows granular constraints management for distinct net chains, improving accuracy of design rule checks and reducing rework on complex boards. Commits include two entries for the same change (ad8cb24c006c09562938e6e15ecd7f11bf75707d), both introducing per-chain netclass support and DRC predicates. Impact: foundation for chain-aware constraint governance and easier handling of physical constraints across nets and chains.
October 2025
2 Commits • 2 Features
Oct 1, 2025October 2025 monthly summary for KiCad/kicad-source-mirror. Delivered two core capabilities that enhance net organization, reduce terminology ambiguity, and improve design clarity and maintainability. Key changes include: (1) a codebase-wide rename of the Signal abstraction to Net Chain to reflect logical groupings of nets and avoid collisions with electrical/simulation terminology; updated keyword definitions, C++ sources, and tests to ensure consistency (commit 1ce39b2888960d5755d9c1eae3e508750852d804). (2) introduction of Net Chains in schematic and PCB tooling, enabling users to define and visualize net chains, assign custom netclasses/colors, and view chain membership via a Net Inspector column (commit 53522782493f2647d34fb0c141c6a76b324ee069). No major bug fixes were required this month; focus was on refactoring, feature delivery, and test coverage. Overall impact: clearer net organization, reduced naming ambiguity, and a more intuitive design workflow across schematics and boards. Technologies/skills demonstrated include C++ refactoring, UI integration, test adaptation, and robust version-control discipline.
2 Commits • 2 Features
Oct 1, 2025October 2025 monthly summary for KiCad/kicad-source-mirror. Delivered two core capabilities that enhance net organization, reduce terminology ambiguity, and improve design clarity and maintainability. Key changes include: (1) a codebase-wide rename of the Signal abstraction to Net Chain to reflect logical groupings of nets and avoid collisions with electrical/simulation terminology; updated keyword definitions, C++ sources, and tests to ensure consistency (commit 1ce39b2888960d5755d9c1eae3e508750852d804). (2) introduction of Net Chains in schematic and PCB tooling, enabling users to define and visualize net chains, assign custom netclasses/colors, and view chain membership via a Net Inspector column (commit 53522782493f2647d34fb0c141c6a76b324ee069). No major bug fixes were required this month; focus was on refactoring, feature delivery, and test coverage. Overall impact: clearer net organization, reduced naming ambiguity, and a more intuitive design workflow across schematics and boards. Technologies/skills demonstrated include C++ refactoring, UI integration, test adaptation, and robust version-control discipline.
October 2025
September 2025
4 Commits • 2 Features
Sep 1, 2025In September 2025, shipped foundational Net Chains capability in KiCad (KiCad/kicad-source-mirror), enabling logical grouping of nets across schematics and paving the way for signal integrity tooling and advanced routing features. Delivered core data model, schematic plumbing, parsing scaffolding, and UI integration to label, manage, and track logical signal groups. Established the scaffolding for length tuning and differential pair routing, and integrated updates into the connection graph with initial tests.
September 2025
4 Commits • 2 Features
Sep 1, 2025In September 2025, shipped foundational Net Chains capability in KiCad (KiCad/kicad-source-mirror), enabling logical grouping of nets across schematics and paving the way for signal integrity tooling and advanced routing features. Delivered core data model, schematic plumbing, parsing scaffolding, and UI integration to label, manage, and track logical signal groups. Established the scaffolding for length tuning and differential pair routing, and integrated updates into the connection graph with initial tests.
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Quality Metrics
Correctness94.8%
Maintainability88.0%
Architecture88.6%
Performance80.4%
AI Usage20.0%
Skills & Technologies
Programming Languages
ANSICCC++CMakeCMakeLists.txtCMakeScriptJSONKSYKicad_druKicad_pcb
Technical Skills
3D GraphicsAPI DesignAPI DevelopmentAlgorithm DesignAlgorithm OptimizationAltium DesignerBackend DevelopmentBinary Data HandlingBinary File FormatsBoolean OperationsBug FixBug FixingBuild SystemsC++C++ Development
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