If there is no '#define USE_SERIAL', qmk configurator will give an error, so add '#define USE_SERIAL' to `mint60/config.h`。
#define TAPPING_FORCE_HOLD
#define TAPPING_TERM 100
+#define USE_SERIAL
+
/* key matrix size */
#define MATRIX_ROWS 10
#define MATRIX_COLS 8
#pragma once
/* Use I2C or Serial, not both */
-#define USE_SERIAL
+// #define USE_SERIAL
// #define USE_I2C
// #define MASTER_RIGHT
#pragma once
/* Use I2C or Serial, not both */
-#define USE_SERIAL
+// #define USE_SERIAL
// #define USE_I2C
// #define MASTER_RIGHT