stanford-ssi/samwise-flight-software
Dec 2024 – Feb 2026
14 Months active
Languages Used
MarkdownCCMakeyamlPythonYAMLC++CSS
Technical Skills
Build DeploymentDocumentationRemote AccessSSH ConfigurationC ProgrammingCMake
devYaoYH
PROFILE
Devyaoyh
Yiheng Yao developed and maintained the stanford-ssi/samwise-flight-software repository over 14 months, delivering robust embedded flight software for satellite systems. He migrated the build system from CMake to Bazel, refactored core state machine logic to resolve dependency cycles, and implemented modular, testable C/C++ code for telemetry, command handling, and hardware abstraction. Yiheng integrated CI/CD pipelines using GitHub Actions, automated code formatting and linting, and expanded platform support to Raspberry Pi Pico and Linux. His work included AI-assisted code review workflows, partitioned firmware deployment, and detailed documentation, resulting in improved reliability, maintainability, and onboarding for a complex, safety-critical embedded environment.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
206Total
Bugs
43
Commits
206
Features
87
Lines of code
57,968
Activity Months14
Your Network
25 peopleShared Repositories
25
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Work History
February 2026
46 Commits • 21 Features
Feb 1, 2026February 2026 performance summary for stanford-ssi/samwise-flight-software. Key outcomes include a Bazel-based build system migration with CI upgrades, improved caching and toolchain configuration, and a reduction in build times. The state machine was refactored to use state_id with a registry-based resolution, resolving circular dependencies between scheduler, states, and tasks. Testing and quality tooling were strengthened via adjacent test mocks, a dedicated formatter workflow, and tightened linting/pre-commit hooks. Platform and hardware support expanded with Linux toolchains and Pico device integration, alongside SSI-based LittleFS migration. Finally, CI stability was improved through fixes for bring-up dependencies, reintroduction of essential submodules, and CI workflow consolidation. These efforts deliver faster feedback, more maintainable code, and smoother on-boarding for new contributors, while enabling safer parallelism and broader hardware support.
46 Commits • 21 Features
Feb 1, 2026February 2026 performance summary for stanford-ssi/samwise-flight-software. Key outcomes include a Bazel-based build system migration with CI upgrades, improved caching and toolchain configuration, and a reduction in build times. The state machine was refactored to use state_id with a registry-based resolution, resolving circular dependencies between scheduler, states, and tasks. Testing and quality tooling were strengthened via adjacent test mocks, a dedicated formatter workflow, and tightened linting/pre-commit hooks. Platform and hardware support expanded with Linux toolchains and Pico device integration, alongside SSI-based LittleFS migration. Finally, CI stability was improved through fixes for bring-up dependencies, reintroduction of essential submodules, and CI workflow consolidation. These efforts deliver faster feedback, more maintainable code, and smoother on-boarding for new contributors, while enabling safer parallelism and broader hardware support.
February 2026
January 2026
1 Commits
Jan 1, 2026January 2026 summary for stanford-ssi/samwise-flight-software focusing on reliability and build determinism. Delivered a targeted fix to pin the CPM script download to a specific path in the home directory, preventing repeated downloads during build updates and improving CI reliability.
January 2026
1 Commits
Jan 1, 2026January 2026 summary for stanford-ssi/samwise-flight-software focusing on reliability and build determinism. Delivered a targeted fix to pin the CPM script download to a specific path in the home directory, preventing repeated downloads during build updates and improving CI reliability.
November 2025
10 Commits • 4 Features
Nov 1, 2025November 2025 monthly summary for stanford-ssi/samwise-flight-software focused on targeted functionality delivery, reliability improvements, and repo hygiene. Delivered a partitioned, multi-version build/config with two program partitions and build flags to enable selective functionality; implemented a robust reboot and partition management flow for Raspberry Pi Pico to improve update reliability; refreshed documentation and assets to streamline partition loading, two-version build guidance, and onboarding; and applied code-quality improvements including formatting and lightweight debugging aids to improve readability and traceability. Business value delivered includes safer, more maintainable deployments, clearer build/deployment processes, and reduced maintenance burden plus faster onboarding for new engineers.
10 Commits • 4 Features
Nov 1, 2025November 2025 monthly summary for stanford-ssi/samwise-flight-software focused on targeted functionality delivery, reliability improvements, and repo hygiene. Delivered a partitioned, multi-version build/config with two program partitions and build flags to enable selective functionality; implemented a robust reboot and partition management flow for Raspberry Pi Pico to improve update reliability; refreshed documentation and assets to streamline partition loading, two-version build guidance, and onboarding; and applied code-quality improvements including formatting and lightweight debugging aids to improve readability and traceability. Business value delivered includes safer, more maintainable deployments, clearer build/deployment processes, and reduced maintenance burden plus faster onboarding for new engineers.
November 2025
October 2025
32 Commits • 11 Features
Oct 1, 2025October 2025 (2025-10) monthly summary for stanford-ssi/samwise-flight-software focused on onboarding efficiency, scalable testing, and CI automation. Key features delivered include onboarding documentation improvements aligned with the latest processes, enhancements to the local test framework and shared infrastructure enabling non-embedded unit testing, and visualization upgrades for running state tests with improved event logging. Additionally, CI/testing workflow automation was added via GitHub Actions with ctest-based test discovery, and deployment tooling was extended with a SWD binary loading script to streamline software deployment and testing. Major bug fixes included code formatting cleanup, fixes to test logging dependencies and linking, and radio transmit mode logic improvements, contributing to more stable builds and faster feedback. The combined impact reduces onboarding time, increases test coverage and reliability, and accelerates iteration cycles, delivering tangible business value and stronger developer productivity.
October 2025
32 Commits • 11 Features
Oct 1, 2025October 2025 (2025-10) monthly summary for stanford-ssi/samwise-flight-software focused on onboarding efficiency, scalable testing, and CI automation. Key features delivered include onboarding documentation improvements aligned with the latest processes, enhancements to the local test framework and shared infrastructure enabling non-embedded unit testing, and visualization upgrades for running state tests with improved event logging. Additionally, CI/testing workflow automation was added via GitHub Actions with ctest-based test discovery, and deployment tooling was extended with a SWD binary loading script to streamline software deployment and testing. Major bug fixes included code formatting cleanup, fixes to test logging dependencies and linking, and radio transmit mode logic improvements, contributing to more stable builds and faster feedback. The combined impact reduces onboarding time, increases test coverage and reliability, and accelerates iteration cycles, delivering tangible business value and stronger developer productivity.
September 2025
1 Commits
Sep 1, 2025September 2025: Stabilized LoRa communications and enhanced build/test workflow for stanford-ssi/samwise-flight-software. Delivered a race-condition fix in the LoRa transmission queue, added build/config scripts to enforce formatting and linting, and established a CI/CD pipeline to automate builds and tests, reducing manual toil and accelerating validation for satellite comms.
1 Commits
Sep 1, 2025September 2025: Stabilized LoRa communications and enhanced build/test workflow for stanford-ssi/samwise-flight-software. Delivered a race-condition fix in the LoRa transmission queue, added build/config scripts to enforce formatting and linting, and established a CI/CD pipeline to automate builds and tests, reducing manual toil and accelerating validation for satellite comms.
September 2025
August 2025
10 Commits • 2 Features
Aug 1, 2025August 2025 monthly summary for stanford-ssi/samwise-flight-software: Delivered AI-assisted development workflows and telemetry/ADCS enhancements that improve reliability, maintainability, and cross-module visibility. Key outcomes include Claude AI-assisted code review workflows integrated with GitHub Actions and Claude guidance for C code and PR handling; telemetry and ADCS subsystem enhancements including new telemetry parsing, UART reliability improvements, and adcs_task exposure across modules. Major bugs fixed included restoring telemetry polling to a 1-second interval and correcting running state task accounting to include command_task. These efforts deliver business value via faster code reviews, clearer quality signals, more robust telemetry/ADCS data paths, and improved runtime task visibility. Technologies/skills demonstrated include GitHub Actions automation, Claude AI integration, C code guidance, UART/telemetry reliability engineering, and modular runtime state management.
August 2025
10 Commits • 2 Features
Aug 1, 2025August 2025 monthly summary for stanford-ssi/samwise-flight-software: Delivered AI-assisted development workflows and telemetry/ADCS enhancements that improve reliability, maintainability, and cross-module visibility. Key outcomes include Claude AI-assisted code review workflows integrated with GitHub Actions and Claude guidance for C code and PR handling; telemetry and ADCS subsystem enhancements including new telemetry parsing, UART reliability improvements, and adcs_task exposure across modules. Major bugs fixed included restoring telemetry polling to a 1-second interval and correcting running state task accounting to include command_task. These efforts deliver business value via faster code reviews, clearer quality signals, more robust telemetry/ADCS data paths, and improved runtime task visibility. Technologies/skills demonstrated include GitHub Actions automation, Claude AI integration, C code guidance, UART/telemetry reliability engineering, and modular runtime state management.
July 2025
42 Commits • 17 Features
Jul 1, 2025July 2025 focused on strengthening mission safety, reliability, and observability in stanford-ssi/samwise-flight-software. Delivered a robust burn_wire sequence with an integrated state machine and bypass path, enabling safe startup, remote override capability, and PWM-tuned control; fixed bypass regression to ensure correct initialization flow. Enhanced operator feedback and system visibility with per-task LED indicators and detailed logging, and consolidated device status monitoring under a unified driver with earlier GPIO init to reliably read RBF pins. Improved ground-station UX by making it more interactive and by logging LoRA parameters during satellite init. Streamlined developer experience and reduced risk with build reliability fixes and updated Pico tooling/docs. These changes collectively reduce on-orbit risk, improve maintainability, and accelerate debugging and ops readiness.
42 Commits • 17 Features
Jul 1, 2025July 2025 focused on strengthening mission safety, reliability, and observability in stanford-ssi/samwise-flight-software. Delivered a robust burn_wire sequence with an integrated state machine and bypass path, enabling safe startup, remote override capability, and PWM-tuned control; fixed bypass regression to ensure correct initialization flow. Enhanced operator feedback and system visibility with per-task LED indicators and detailed logging, and consolidated device status monitoring under a unified driver with earlier GPIO init to reliably read RBF pins. Improved ground-station UX by making it more interactive and by logging LoRA parameters during satellite init. Streamlined developer experience and reduced risk with build reliability fixes and updated Pico tooling/docs. These changes collectively reduce on-orbit risk, improve maintainability, and accelerate debugging and ops readiness.
July 2025
June 2025
20 Commits • 6 Features
Jun 1, 2025June 2025 performance summary for stanford-ssi/samwise-flight-software: Delivered reliability, security, and build-quality improvements across telemetry, command handling, and hardware support. Highlights include robust beacon/slate data serialization, centralized command processing with improved retry/queue logic, cryptographic library and HMAC support for CircuitPython, non-blocking I2C with timeouts for telemetry/MPPT, and enhanced watchdog sleep management plus board compatibility. The work reduces data loss, improves safety and security, accelerates deployment, and strengthens maintainability.
June 2025
20 Commits • 6 Features
Jun 1, 2025June 2025 performance summary for stanford-ssi/samwise-flight-software: Delivered reliability, security, and build-quality improvements across telemetry, command handling, and hardware support. Highlights include robust beacon/slate data serialization, centralized command processing with improved retry/queue logic, cryptographic library and HMAC support for CircuitPython, non-blocking I2C with timeouts for telemetry/MPPT, and enhanced watchdog sleep management plus board compatibility. The work reduces data loss, improves safety and security, accelerates deployment, and strengthens maintainability.
May 2025
33 Commits • 19 Features
May 1, 2025May 2025 performance summary for stanford-ssi/samwise-flight-software. This month focused on stabilizing flight software reliability, improving telemetry fidelity, and accelerating maintainability through code quality improvements, testability enhancements, and build-system optimizations. Delivered targeted features, resolved critical bugs, and laid groundwork for safer operations and faster iteration.
33 Commits • 19 Features
May 1, 2025May 2025 performance summary for stanford-ssi/samwise-flight-software. This month focused on stabilizing flight software reliability, improving telemetry fidelity, and accelerating maintainability through code quality improvements, testability enhancements, and build-system optimizations. Delivered targeted features, resolved critical bugs, and laid groundwork for safer operations and faster iteration.
May 2025
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025 — stanford-ssi/samwise-flight-software: Delivered foundational project documentation to improve onboarding, code structure clarity, and contribution workflow. The README documents hardware abstraction, common headers, and FSM components, and establishes a structured process for issue creation and triage, setting the stage for faster onboarding and more consistent pull requests. No major bugs reported this month; the focus was on maintainability, governance, and developer experience. Impact includes reduced ramp-up time for new contributors, clearer collaboration across hardware/software boundaries, and improved triage efficiency. Technologies and skills demonstrated include documentation best practices, repository governance, and knowledge of flight software architecture.
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025 — stanford-ssi/samwise-flight-software: Delivered foundational project documentation to improve onboarding, code structure clarity, and contribution workflow. The README documents hardware abstraction, common headers, and FSM components, and establishes a structured process for issue creation and triage, setting the stage for faster onboarding and more consistent pull requests. No major bugs reported this month; the focus was on maintainability, governance, and developer experience. Impact includes reduced ramp-up time for new contributors, clearer collaboration across hardware/software boundaries, and improved triage efficiency. Technologies and skills demonstrated include documentation best practices, repository governance, and knowledge of flight software architecture.
March 2025
3 Commits • 1 Features
Mar 1, 2025February 2025-03 monthly summary for stanford-ssi/samwise-flight-software focusing on delivered features, bug fixes, impact, and technical skills demonstrated. The team delivered a serialization-focused refactor to slate data handling and added safeguards to ensure reliability in constrained communication environments.
3 Commits • 1 Features
Mar 1, 2025February 2025-03 monthly summary for stanford-ssi/samwise-flight-software focusing on delivered features, bug fixes, impact, and technical skills demonstrated. The team delivered a serialization-focused refactor to slate data handling and added safeguards to ensure reliability in constrained communication environments.
March 2025
February 2025
5 Commits • 3 Features
Feb 1, 2025February 2025 monthly summary for stanford-ssi/samwise-flight-software. Focused on architecture, build stability, and CI/CD modernization. Core deliverables include a telemetry beacon overhaul, build compatibility improvements for PICO, and improvements to code quality and automation. These changes enhance maintainability, test coverage, and faster, more reliable deployments.
February 2025
5 Commits • 3 Features
Feb 1, 2025February 2025 monthly summary for stanford-ssi/samwise-flight-software. Focused on architecture, build stability, and CI/CD modernization. Core deliverables include a telemetry beacon overhaul, build compatibility improvements for PICO, and improvements to code quality and automation. These changes enhance maintainability, test coverage, and faster, more reliable deployments.
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025 monthly summary for stanford-ssi/samwise-flight-software. Focused on delivering a scalable, maintainable codebase and robust testing readiness to accelerate development velocity and CI efficiency.
1 Commits • 1 Features
Jan 1, 2025January 2025 monthly summary for stanford-ssi/samwise-flight-software. Focused on delivering a scalable, maintainable codebase and robust testing readiness to accelerate development velocity and CI efficiency.
January 2025
December 2024
1 Commits • 1 Features
Dec 1, 2024Monthly summary for 2024-12 focusing on stanford-ssi/samwise-flight-software: key feature delivery, minimal bug activity, impact on testing workflow, and demonstrated technical skills.
December 2024
1 Commits • 1 Features
Dec 1, 2024Monthly summary for 2024-12 focusing on stanford-ssi/samwise-flight-software: key feature delivery, minimal bug activity, impact on testing workflow, and demonstrated technical skills.
Activity
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Quality Metrics
Correctness91.2%
Maintainability90.4%
Architecture88.6%
Performance85.8%
AI Usage28.2%
Skills & Technologies
Programming Languages
BazelCC++CMakeCSSGitHTMLHeaderJSONJavaScript
Technical Skills
AI IntegrationAPI DesignBazelBazel build systemBuild AutomationBuild DeploymentBuild SystemBuild System ConfigurationBuild SystemsBuild Systems (CMake)Build systemsCC ProgrammingC programmingC++ development
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