You treat any driver that comes without SPI, like a standard Pololu driver:
You set the Vref via potmeter and calculate steps/mm according to the jumper settings inside the driver socket.
Then change this line in Marlins configuration.h:
You set the Vref via potmeter and calculate steps/mm according to the jumper settings inside the driver socket.
Then change this line in Marlins configuration.h:
// X Y Z E steps/mm
#define DEFAULT_AXIS_STEPS_PER_UNIT {200, 200, 200, 140.6} // steps per mm for Kossel (GT2, 16 tooth @1/32 and e-steps @1/16)