Devlog: Compiling a 3x3 Layout into QMK CoreProject: Hackropad Ver. 1.0Hardware: Custom 3x3 Layout (9 keys) + SSD1306 0.91” OLEDBrain: RP2040 Controller (.uf2 binary output)Method: Manual folder override using AI pairing tools. The host repository expected 17 keys, crashing our 9-key footprint. I dropped standard layout macros and wrote raw C-brackets inside keymap.c to bypass the validation parser.
Standard qmk compile hung on a blank prompt. We switched to raw make hackpad:default to expose real-time background debugging logs.
The global repository code kept forcing a 5x4 matrix over our 3x3 array. We injected #undef overrides into config.h to wipe the system memory:
#undef MATRIX_ROWS
#undef MATRIX_COLS
#undef MATRIX_ROW_PINS
#undef MATRIX_COL_PINS
Pointer Signedness Check: The cat animation arrays threw a type-safety error. We swapped data types from unsigned char to plain const char PROGMEM to clear the validation gate.
Build State: Fixed, cleaned environment, and ready for final firmware compilation.