2026-04-20
Learn how to achieve smooth 30–60 FPS LVGL UI on the Aptus Display 5-inch FSMC capacitive touch module (800x480, DBT050BVC50R040B) with STM32 and Marlin firmware. Detailed optimization techniques for draw buffers, DMA2D, FSMC timing, touch interrupt handling, and custom 3D printer widgets for live temperature graphs, bed mesh visualization, and G-code preview.