masa-umich/mcnugget
Nov 2024 – Mar 2025
4 Months active
Languages Used
Python
Technical Skills
AutomationBackend DevelopmentConfigurationFull Stack DevelopmentPythonScripting
Justin Hu
PROFILE
Justin Hu
Worked on the masa-umich/mcnugget repository, delivering a series of automation and control system enhancements for hotfire test sequencing and valve management. Over four months, refactored the autosequence framework to centralize ignition logic, introduced simulation tools for coldflow testing, and streamlined pressurization and abort procedures. Applied Python and scripting expertise to improve dependency management, update channel definitions, and align sensor and valve logic for greater reliability. Integrated countdown logic and refined input handling to reduce operational risk and downtime. The work emphasized maintainability, safety, and test clarity, supporting robust end-to-end experiments and smoother future development within embedded systems environments.
Overall Statistics
Feature vs Bugs
80%Features
Repository Contributions
11Total
Bugs
1
Commits
11
Features
4
Lines of code
6,884
Activity Months4
Your Network
228 peopleSame Organization
@umich.edu214
Avionics CompMember
Almo-oMember
Alexander SmartMember
Abby DukeMember
Adam DiehlMember
adfarthMember
Alex HansenMember
Ali DowairMember
Aniket JivaniMember
Shared Repositories
14
Work History
March 2025
4 Commits • 1 Features
Mar 1, 2025March 2025 performance summary for masa-umich/mcnugget: Key hotfire sequence safety and reliability improvements were delivered, with refactoring and countdown integration to improve safety, reliability, and user-facing behavior. Implemented updates to pressure setpoints, valve control refinements for fuel and oxygen systems, enhanced abort and termination steps, and safety-oriented cleanups. Refactored 'pressurize' to 'prepress' and integrated countdown logic into the firing sequence, updating input handling and the timing of igniter energizing. Tightened abort/termination logic and safety cleanups; updated input handling for predictable operation during tests. Prepared updates for 3/16 coldflow and related test readiness. These changes reduce operational risk, decrease downtime between tests, and improve maintainability and operator confidence.
4 Commits • 1 Features
Mar 1, 2025March 2025 performance summary for masa-umich/mcnugget: Key hotfire sequence safety and reliability improvements were delivered, with refactoring and countdown integration to improve safety, reliability, and user-facing behavior. Implemented updates to pressure setpoints, valve control refinements for fuel and oxygen systems, enhanced abort and termination steps, and safety-oriented cleanups. Refactored 'pressurize' to 'prepress' and integrated countdown logic into the firing sequence, updating input handling and the timing of igniter energizing. Tightened abort/termination logic and safety cleanups; updated input handling for predictable operation during tests. Prepared updates for 3/16 coldflow and related test readiness. These changes reduce operational risk, decrease downtime between tests, and improve maintainability and operator confidence.
March 2025
February 2025
2 Commits • 1 Features
Feb 1, 2025February 2025 performance summary for masa-umich/mcnugget. Delivered a major overhaul of the hotfire test system valve control and sequencing to improve pre-pressurization, purging, ignition, termination, and abort handling. Refactored valve control parameters and updated logic to use prevalves during the countdown for testing clarity and robustness, enhancing safety and test reliability.
February 2025
2 Commits • 1 Features
Feb 1, 2025February 2025 performance summary for masa-umich/mcnugget. Delivered a major overhaul of the hotfire test system valve control and sequencing to improve pre-pressurization, purging, ignition, termination, and abort handling. Refactored valve control parameters and updated logic to use prevalves during the countdown for testing clarity and robustness, enhancing safety and test reliability.
January 2025
2 Commits • 1 Features
Jan 1, 2025In January 2025, the masa-umich/mcnugget project focused on stability, dependency maintenance, and alignment of autosequences channel definitions to support reliable operation and smoother future feature work.
2 Commits • 1 Features
Jan 1, 2025In January 2025, the masa-umich/mcnugget project focused on stability, dependency maintenance, and alignment of autosequences channel definitions to support reliable operation and smoother future feature work.
January 2025
November 2024
3 Commits • 1 Features
Nov 1, 20242024-11 Monthly Summary for masa-umich/mcnugget: Delivered a major refactor and automation overhaul of the autosequence framework, centralizing ignition sequences into a main autosequences file, adding conditional fuel/oxidizer logic, and introducing a coldflow testing script. Implemented an automation tool (simulate.py) to orchestrate coldflow, press_fill, and hotfire sequences with stdin interaction and robust shutdown. Moved critical sequences (hotfire and press_fill) to the main branch to improve maintainability and discoverability. These changes reduced manual steps, sped up testing and sequence execution, and strengthened reliability for end-to-end experiments.
November 2024
3 Commits • 1 Features
Nov 1, 20242024-11 Monthly Summary for masa-umich/mcnugget: Delivered a major refactor and automation overhaul of the autosequence framework, centralizing ignition sequences into a main autosequences file, adding conditional fuel/oxidizer logic, and introducing a coldflow testing script. Implemented an automation tool (simulate.py) to orchestrate coldflow, press_fill, and hotfire sequences with stdin interaction and robust shutdown. Moved critical sequences (hotfire and press_fill) to the main branch to improve maintainability and discoverability. These changes reduced manual steps, sped up testing and sequence execution, and strengthened reliability for end-to-end experiments.
Activity
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Quality Metrics
Correctness80.0%
Maintainability81.8%
Architecture74.6%
Performance63.6%
AI Usage21.8%
Skills & Technologies
Programming Languages
Python
Technical Skills
AutomationBackend DevelopmentConfigurationControl SystemsDependency ManagementEmbedded SystemsFull Stack DevelopmentPythonPython DevelopmentPython PackagingPython ScriptingScriptingSimulationTestingsubprocess management
Repositories Contributed To
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