Worked on the lvgl/lvgl repository to address a critical stability issue in the Spinbox widget, focusing on embedded systems and C programming. Delivered a targeted bug fix that resolved stack corruption caused by incorrect handling of leading zeros when the digit count was less than the value set. Enhanced the reliability of numeric input in embedded user interfaces by introducing a regression test, ensuring robust behavior in edge cases. Collaborated closely with other contributors through co-authored commits, demonstrating attention to code quality and thorough unit testing. The work strengthened the stability of the Spinbox component for embedded UI applications.