Black screen on cyd_35r came from TFT_BL=21; align pins/platformio/touch with CYD_PROJECT_GUIDE and export firmware/cyd_35r. Co-authored-by: Cursor <cursoragent@cursor.com>
Touch+LVGL UI shows QUIET/SOUND, pin level, hit count; no dB (digital only). Co-authored-by: Cursor <cursoragent@cursor.com>