Monthly summary for 2026-03 (ihmc-open-robotics-software) focusing on business value and technical achievements. Highlights include robustness fixes to robotics trajectory message tests and locomotion control initialization/transition enhancements, delivering more reliable simulations and smoother control transitions.

February 2026 monthly summary: Delivered a major dependency upgrade across ihmc-open-robotics-software with the Euclid library upgrade to 0.22.5. The upgrade, driven by commit 4c248e616c5a7b070eb8a6220be7c88cae106756 ("Version up Euclid to 0.22.5 (#1223)"), improved cross-module compatibility, unlocked latest features and bug fixes, and reduced technical debt. The work positions the project for upcoming capabilities and accelerates downstream feature delivery by stabilizing the core dependency surface.

January 2026 monthly highlights for IHMC robotics software: - Focused on stability through dependency management and enabling MPC workflows across two repositories. - Delivered concrete assets for MPC-ready simulations and improved cross-repo consistency, driving faster, more reliable builds and experiments. Key achievements: - Aligned Euclid library dependency across ihmc-open-robotics-software from 0.22.5 to 0.22.4 to improve compatibility and stability (commit e9127e4eb20dd773a32aac7212e7297395423706). - Added MPC-ready URDFs for the left and right forearms of Robot Alex, enabling MPC-based simulation (commit 0fa05edfb50b546d8b4d6556be3da1eedf509e2c). - Coordinated changes across two repositories to standardize dependency management and MPC tooling, reducing integration risk and setup time.

September 2025 monthly summary for ihmc-open-robotics-software. Key efforts focused on enabling cycloid hands variant support and stabilizing push-recovery behavior to improve reliability and hardware compatibility. Delivered a new capability flag for cycloid hands and completed important fixes to push-recovery tests and related controller integration, aligning with the roadmap for V1_FULL_ROBOT. Impact: more robust simulation and real-world behavior under push scenarios, reduced test flakiness, and smoother adoption of cycloid hand variants across robot configurations. Technologies demonstrated include interface extension patterns for feature flags, test stabilization, and controller integration.

2025-08 monthly delivery focused on enhancing robot control for the Quickster Walking feature with improved debugging and foot contact tuning. Delivered parameterized acceleration integration, extended multi-threading support, and tuned foot contact window to improve stability and safety. This work, aligned with commit e6e6622cf1c37472100685b662b1ca08edf43572 ("Improving H1-2 stuffs (#950)"), enables faster iteration and more reliable walking behavior, with measurable impact on control fidelity and fault resilience.

June 2025 performance summary: Achieved meaningful improvements in physics fidelity, asset reliability, and platform flexibility across two core repositories. The work focused on recalibrating the Alexander robot’s physical model, fixing URDF asset loading, introducing a leg-focused robot variant, and keeping dependencies up to date. These efforts translate to more accurate simulations, reduced rendering issues in visualization, and faster iteration for legged configurations, delivering tangible business value in both development and deployment contexts.

May 2025 monthly summary for ihmc-open-robotics-software. Focused on aligning the Alexander robot lower body assets with the simulation model, delivering a concrete mesh/URDF integration that reduces kinematic errors and removes legacy leg IMU dependencies. The work enhances simulation fidelity, maintainability, and readiness for downstream control and planning tasks.

March 2025 monthly summary for ihmc-open-robotics-software. Focused on API clarity improvements through a non-functional refactor of the feedback controller time step naming. Renamed getWholeBodyControllerCoreDT to getFeedbackControllerDT in WholeBodyControllerParameters to improve clarity of the feedback controller's time step without altering runtime behavior. The change is captured in commit afcff9350f77dee1adcf93bfbb7ba7c53e37890f and linked to issue #707 (Renaming the wholeBodyControllerCore into FeedbackControllerThread).

January 2025 monthly summary for ihmc-open-robotics-software focusing on MPC simulation enhancements and API cleanup to improve simulation fidelity, maintainability, and developer velocity. Key outcomes include new MPC-ready simulation components, integration work tying WBCC threads to MPC controller tasks, and API standardization that reduces complexity and maintenance burden.