

December 2025: Targeted documentation improvement in ArduPilot/ardupilot focusing on servo output constants for AP_JSButton. This non-breaking change clarifies current behavior by correcting comments and aligning documentation with actual code, without introducing runtime changes.
December 2025: Targeted documentation improvement in ArduPilot/ardupilot focusing on servo output constants for AP_JSButton. This non-breaking change clarifies current behavior by correcting comments and aligning documentation with actual code, without introducing runtime changes.
May 2025 — ArduPilot/ardupilot: Fixed Surftrak rangefinder behavior by resetting target on disarm and reacquiring after re-arm, with added autotest coverage. This eliminates stale data when motors are disarmed, maintains accurate range readings when armed, and improves safety and reliability of Surftrak mode. Commits included: 6215ab0f9eeb45fa3d95596c18d74ae4192b1fef; 7cfb84e30d5aeb263c48167341240ffde242f57a.
May 2025 — ArduPilot/ardupilot: Fixed Surftrak rangefinder behavior by resetting target on disarm and reacquiring after re-arm, with added autotest coverage. This eliminates stale data when motors are disarmed, maintains accurate range readings when armed, and improves safety and reliability of Surftrak mode. Commits included: 6215ab0f9eeb45fa3d95596c18d74ae4192b1fef; 7cfb84e30d5aeb263c48167341240ffde242f57a.
March 2025: Delivered a focused bug fix to improve cross-platform time API correctness in ArduPilot. Restricted clock_gettime usage to HAL_BOARD_CHIBIOS, preventing its availability on SITL and ESP32 builds to avoid misconfiguration and potential runtime errors. This reduces platform-specific runtime failures, simplifies build configurations, and enhances overall system reliability across supported boards.
March 2025: Delivered a focused bug fix to improve cross-platform time API correctness in ArduPilot. Restricted clock_gettime usage to HAL_BOARD_CHIBIOS, preventing its availability on SITL and ESP32 builds to avoid misconfiguration and potential runtime errors. This reduces platform-specific runtime failures, simplifies build configurations, and enhances overall system reliability across supported boards.
December 2024 Monthly Summary for ArduPilot/ardupilot focused on stabilizing and parameterizing Position Hold (POSHOLD) control with RC-driven horizontal inputs. Key features delivered: - Position Hold Pilot Speed Cap and RC-driven Horizontal Control: added PILOT_SPEED parameter to cap XY velocity in POSHOLD, refactored horizontal control to use this parameter, and introduced a function to compute pilot-desired horizontal rates from RC inputs. This enables safer, more predictable POSHOLD behavior under user RC commands. Major bugs fixed: - Addressed bounce-back in POSHOLD stopping by capping XY velocity with PILOT_SPEED, reducing overshoot and improving stop stability under varying RC inputs. (Commit: 2a28b77ef671369cadfb6c94239debb00abcbb0e) Autotest and quality: - Added autotest PosHoldBounceBack coverage to ensure stability and to prevent bounce-back when stopping under varying RC inputs. (Commit: 1df67446f6c48c6bc56df78fd361949d5864fac1e) Overall impact and accomplishments: - Safety and reliability of POSHOLD improved for users operating in RC-driven scenarios, with a clear mechanism to cap speed and maintain stable stopping. - Improved maintainability through parameterization and a dedicated autotest validating bounce-back behavior. Technologies/skills demonstrated: - Control surface refactoring and parameterization (PILOT_SPEED) - RC-input processing and mapping to pilot-desired rates - Autotest development for stability validation - Version control traceability with clear commit messages Repository: ArduPilot/ardupilot Month: 2024-12
December 2024 Monthly Summary for ArduPilot/ardupilot focused on stabilizing and parameterizing Position Hold (POSHOLD) control with RC-driven horizontal inputs. Key features delivered: - Position Hold Pilot Speed Cap and RC-driven Horizontal Control: added PILOT_SPEED parameter to cap XY velocity in POSHOLD, refactored horizontal control to use this parameter, and introduced a function to compute pilot-desired horizontal rates from RC inputs. This enables safer, more predictable POSHOLD behavior under user RC commands. Major bugs fixed: - Addressed bounce-back in POSHOLD stopping by capping XY velocity with PILOT_SPEED, reducing overshoot and improving stop stability under varying RC inputs. (Commit: 2a28b77ef671369cadfb6c94239debb00abcbb0e) Autotest and quality: - Added autotest PosHoldBounceBack coverage to ensure stability and to prevent bounce-back when stopping under varying RC inputs. (Commit: 1df67446f6c48c6bc56df78fd361949d5864fac1e) Overall impact and accomplishments: - Safety and reliability of POSHOLD improved for users operating in RC-driven scenarios, with a clear mechanism to cap speed and maintain stable stopping. - Improved maintainability through parameterization and a dedicated autotest validating bounce-back behavior. Technologies/skills demonstrated: - Control surface refactoring and parameterization (PILOT_SPEED) - RC-input processing and mapping to pilot-desired rates - Autotest development for stability validation - Version control traceability with clear commit messages Repository: ArduPilot/ardupilot Month: 2024-12
Month: 2024-11 — Implemented high-frequency IMU data logging with a new loop_rate_logging task in ArduPilot/ardupilot. This feature is controlled by MASK_LOG_IMU_FAST to enable loop-rate logging and reduces unnecessary IMU logs when fast logging is active by adjusting twentyfive_hz_logging. Scheduler integration supports high-rate data paths while maintaining reliability. Commit reference included: ab46ca2098657a41de21d0cb671b894d06ebd4b1 with message "Sub: support MASK_LOG_IMU_FAST (loop rate logging)".
Month: 2024-11 — Implemented high-frequency IMU data logging with a new loop_rate_logging task in ArduPilot/ardupilot. This feature is controlled by MASK_LOG_IMU_FAST to enable loop-rate logging and reduces unnecessary IMU logs when fast logging is active by adjusting twentyfive_hz_logging. Scheduler integration supports high-rate data paths while maintaining reliability. Commit reference included: ab46ca2098657a41de21d0cb671b894d06ebd4b1 with message "Sub: support MASK_LOG_IMU_FAST (loop rate logging)".
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