I have similar problem, using Rumba+ board and DRV8825 step drivers on my delta. I previously had this board and drivers working with different firmware, so am relatively certain the problem is not hardware. I've also temporarily swapped out the drivers with A4988's I had on printer originally (the Rumba is replacing a MKS Gen with a fried mosfet).
The 8825's are nominally toggled for 1/32 microstepping, but I've tried other settings with no success. Here is my current configuration.h motion settings:
#define NUM_EXTRUDER 1
#define MOTHERBOARD 80
#include "pins.h"
// ################## EDIT THESE SETTINGS MANUALLY ################
// ################ END MANUAL SETTINGS ##########################
#define HOST_RESCUE 1
#undef FAN_PIN
#define FAN_PIN ORIG_FAN2_PIN
#undef FAN2_PIN
#define FAN2_PIN -1
#undef FAN_BOARD_PIN
#define FAN_BOARD_PIN -1
#define BOARD_FAN_SPEED 255
#define BOARD_FAN_MIN_SPEED 0
#define FAN_THERMO_PIN ORIG_FAN_PIN
#define FAN_THERMO_MIN_PWM 128
#define FAN_THERMO_MAX_PWM 255
#define FAN_THERMO_MIN_TEMP 45
#define FAN_THERMO_MAX_TEMP 60
#define FAN_THERMO_THERMISTOR_PIN TEMP_0_PIN
#define FAN_THERMO_THERMISTOR_TYPE 1
#undef X_MIN_PIN
#define X_MIN_PIN -1
#undef Y_MIN_PIN
#define Y_MIN_PIN -1
#undef Z_MIN_PIN
#define Z_MIN_PIN -1
#define BLUETOOTH_SERIAL -1
#define BLUETOOTH_BAUD 115200
#define MIXING_EXTRUDER 0
#define DRIVE_SYSTEM 3
#define XAXIS_STEPS_PER_MM 80
#define YAXIS_STEPS_PER_MM 80
#define ZAXIS_STEPS_PER_MM 80
#define EXTRUDER_FAN_COOL_TEMP 50
#define PDM_FOR_EXTRUDER 0
#define PDM_FOR_COOLER 0
#define DECOUPLING_TEST_MAX_HOLD_VARIANCE 20
#define DECOUPLING_TEST_MIN_TEMP_RISE 1
#define KILL_IF_SENSOR_DEFECT 0
#define RETRACT_ON_PAUSE 2
#define PAUSE_START_COMMANDS ""
#define PAUSE_END_COMMANDS ""
#define SHARED_EXTRUDER_HEATER 0
#define EXT0_X_OFFSET 0
#define EXT0_Y_OFFSET 0
#define EXT0_Z_OFFSET 0
#define EXT0_STEPS_PER_MM 100
#define EXT0_TEMPSENSOR_TYPE 1
#define EXT0_TEMPSENSOR_PIN TEMP_0_PIN
#define EXT0_HEATER_PIN HEATER_0_PIN
#define EXT0_STEP_PIN ORIG_E0_STEP_PIN
#define EXT0_DIR_PIN ORIG_E0_DIR_PIN
#define EXT0_INVERSE 0
#define EXT0_ENABLE_PIN ORIG_E0_ENABLE_PIN
#define EXT0_ENABLE_ON 1
#define EXT0_MIRROR_STEPPER 0
#define EXT0_STEP2_PIN ORIG_E0_STEP_PIN
#define EXT0_DIR2_PIN ORIG_E0_DIR_PIN
#define EXT0_INVERSE2 0
#define EXT0_ENABLE2_PIN ORIG_E0_ENABLE_PIN
#define EXT0_MAX_FEEDRATE 50
#define EXT0_MAX_START_FEEDRATE 20
#define EXT0_MAX_ACCELERATION 5000
#define EXT0_HEAT_MANAGER 1
#define EXT0_PREHEAT_TEMP 190
#define EXT0_WATCHPERIOD 1
#define EXT0_PID_INTEGRAL_DRIVE_MAX 230
#define EXT0_PID_INTEGRAL_DRIVE_MIN 40
#define EXT0_PID_PGAIN_OR_DEAD_TIME 5
#define EXT0_PID_I 1
#define EXT0_PID_D 40
#define EXT0_PID_MAX 255
#define EXT0_ADVANCE_K 0
#define EXT0_ADVANCE_L 0
#define EXT0_ADVANCE_BACKLASH_STEPS 0
#define EXT0_WAIT_RETRACT_TEMP 150
#define EXT0_WAIT_RETRACT_UNITS 0
#define EXT0_SELECT_COMMANDS ""
#define EXT0_DESELECT_COMMANDS ""
#define EXT0_EXTRUDER_COOLER_PIN ORIG_FAN_PIN
#define EXT0_EXTRUDER_COOLER_SPEED 255
#define EXT0_DECOUPLE_TEST_PERIOD 12000
#define EXT0_JAM_PIN ORIG_X_MIN_PIN
#define EXT0_JAM_PULLUP 1
#define FEATURE_RETRACTION 1
#define AUTORETRACT_ENABLED 0
#define RETRACTION_LENGTH 6
#define RETRACTION_LONG_LENGTH 13
#define RETRACTION_SPEED 50
#define RETRACTION_Z_LIFT 0.1
#define RETRACTION_UNDO_EXTRA_LENGTH 0
#define RETRACTION_UNDO_EXTRA_LONG_LENGTH 0
#define RETRACTION_UNDO_SPEED 20
#define FILAMENTCHANGE_X_POS 0
#define FILAMENTCHANGE_Y_POS 0
#define FILAMENTCHANGE_Z_ADD 2
#define FILAMENTCHANGE_REHOME 2
#define FILAMENTCHANGE_SHORTRETRACT 5
#define FILAMENTCHANGE_LONGRETRACT 50
#define JAM_METHOD 3
#define JAM_STEPS 220
#define JAM_SLOWDOWN_STEPS 320
#define JAM_SLOWDOWN_TO 70
#define JAM_ERROR_STEPS 500
#define JAM_MIN_STEPS 10
#define JAM_ACTION 1
#define RETRACT_DURING_HEATUP true
#define PID_CONTROL_RANGE 20
#define SKIP_M109_IF_WITHIN 5
#define SCALE_PID_TO_MAX 0
#define TEMP_HYSTERESIS 0
#define EXTRUDE_MAXLENGTH 160
#define NUM_TEMPS_USERTHERMISTOR0 0
#define USER_THERMISTORTABLE0 {}
#define NUM_TEMPS_USERTHERMISTOR1 0
#define USER_THERMISTORTABLE1 {}
#define NUM_TEMPS_USERTHERMISTOR2 0
#define USER_THERMISTORTABLE2 {}
#define GENERIC_THERM_VREF 5
#define GENERIC_THERM_NUM_ENTRIES 33
#define TEMP_GAIN 1
#define HEATER_PWM_SPEED 0
#define COOLER_PWM_SPEED 0
// ############# Heated bed configuration ########################
#define HAVE_HEATED_BED 1
#define HEATED_BED_PREHEAT_TEMP 55
#define HEATED_BED_MAX_TEMP 120
#define SKIP_M190_IF_WITHIN 3
#define HEATED_BED_SENSOR_TYPE 1
#define HEATED_BED_SENSOR_PIN TEMP_1_PIN
#define HEATED_BED_HEATER_PIN HEATER_1_PIN
#define HEATED_BED_SET_INTERVAL 5000
#define HEATED_BED_HEAT_MANAGER 0
#define HEATED_BED_PID_INTEGRAL_DRIVE_MAX 255
#define HEATED_BED_PID_INTEGRAL_DRIVE_MIN 80
#define HEATED_BED_PID_PGAIN_OR_DEAD_TIME 196
#define HEATED_BED_PID_IGAIN 33
#define HEATED_BED_PID_DGAIN 290
#define HEATED_BED_PID_MAX 255
#define HEATED_BED_DECOUPLE_TEST_PERIOD 300000
#define MIN_EXTRUDER_TEMP 180
#define MAXTEMP 260
#define MIN_DEFECT_TEMPERATURE -10
#define MAX_DEFECT_TEMPERATURE 265
#define MILLISECONDS_PREHEAT_TIME 30000
// ################ Endstop configuration #####################
#define MULTI_ZENDSTOP_HOMING 0
#define ENDSTOP_PULLUP_X_MIN true
#define ENDSTOP_X_MIN_INVERTING false
#define MIN_HARDWARE_ENDSTOP_X false
#define ENDSTOP_PULLUP_Y_MIN true
#define ENDSTOP_Y_MIN_INVERTING false
#define MIN_HARDWARE_ENDSTOP_Y false
#define ENDSTOP_PULLUP_Z_MIN true
#define ENDSTOP_Z_MIN_INVERTING false
#define MIN_HARDWARE_ENDSTOP_Z false
#define ENDSTOP_PULLUP_Z2_MINMAX true
#define ENDSTOP_Z2_MINMAX_INVERTING false
#define MINMAX_HARDWARE_ENDSTOP_Z2 false
#define ENDSTOP_PULLUP_X_MAX true
#define ENDSTOP_X_MAX_INVERTING true
#define MAX_HARDWARE_ENDSTOP_X true
#define ENDSTOP_PULLUP_Y_MAX true
#define ENDSTOP_Y_MAX_INVERTING false
#define MAX_HARDWARE_ENDSTOP_Y true
#define ENDSTOP_PULLUP_Z_MAX true
#define ENDSTOP_Z_MAX_INVERTING false
#define MAX_HARDWARE_ENDSTOP_Z true
#define ENDSTOP_PULLUP_X2_MIN true
#define ENDSTOP_PULLUP_Y2_MIN true
#define ENDSTOP_PULLUP_Z2_MINMAX true
#define ENDSTOP_PULLUP_X2_MAX true
#define ENDSTOP_PULLUP_Y2_MAX true
#define ENDSTOP_X2_MIN_INVERTING false
#define ENDSTOP_Y2_MIN_INVERTING false
#define ENDSTOP_X2_MAX_INVERTING false
#define ENDSTOP_Y2_MAX_INVERTING false
#define MIN_HARDWARE_ENDSTOP_X2 false
#define MIN_HARDWARE_ENDSTOP_Y2 false
#define MAX_HARDWARE_ENDSTOP_X2 false
#define MAX_HARDWARE_ENDSTOP_Y2 false
#define X2_MIN_PIN -1
#define X2_MAX_PIN -1
#define Y2_MIN_PIN -1
#define Y2_MAX_PIN -1
#define Z2_MINMAX_PIN -1
#define max_software_endstop_r true
#define min_software_endstop_x true
#define min_software_endstop_y true
#define min_software_endstop_z true
#define max_software_endstop_x false
#define max_software_endstop_y false
#define max_software_endstop_z false
#define DOOR_PIN -1
#define DOOR_PULLUP 1
#define DOOR_INVERTING 0
#define ENDSTOP_X_BACK_MOVE 5
#define ENDSTOP_Y_BACK_MOVE 5
#define ENDSTOP_Z_BACK_MOVE 5
#define ENDSTOP_X_RETEST_REDUCTION_FACTOR 3
#define ENDSTOP_Y_RETEST_REDUCTION_FACTOR 3
#define ENDSTOP_Z_RETEST_REDUCTION_FACTOR 3
#define ENDSTOP_X_BACK_ON_HOME 0
#define ENDSTOP_Y_BACK_ON_HOME 0
#define ENDSTOP_Z_BACK_ON_HOME 0
#define ALWAYS_CHECK_ENDSTOPS 1
#define MOVE_X_WHEN_HOMED 0
#define MOVE_Y_WHEN_HOMED 0
#define MOVE_Z_WHEN_HOMED 0
// ################# XYZ movements ###################
#define X_ENABLE_ON 1
#define Y_ENABLE_ON 0
#define Z_ENABLE_ON 1
#define DISABLE_X 0
#define DISABLE_Y 0
#define DISABLE_Z 0
#define DISABLE_E 1
#define INVERT_X_DIR 0
#define INVERT_X2_DIR 0
#define INVERT_Y_DIR 0
#define INVERT_Y2_DIR 0
#define INVERT_Z_DIR 0
#define INVERT_Z2_DIR 0
#define INVERT_Z3_DIR 0
#define INVERT_Z4_DIR 0
#define X_HOME_DIR 1
#define Y_HOME_DIR 1
#define Z_HOME_DIR 1
#define X_MAX_LENGTH 200
#define Y_MAX_LENGTH 200
#define Z_MAX_LENGTH 602.725
#define X_MIN_POS -150
#define Y_MIN_POS -150
#define Z_MIN_POS 0
#define PARK_POSITION_X 0
#define PARK_POSITION_Y 0
#define PARK_POSITION_Z_RAISE 10
// ##########################################################################################
// ## Movement settings ##
// ##########################################################################################
#define FEATURE_BABYSTEPPING 1
#define BABYSTEP_MULTIPLICATOR 1
#define DELTA_SEGMENTS_PER_SECOND_PRINT 180 // Move accurate setting for print moves
#define DELTA_SEGMENTS_PER_SECOND_MOVE 70 // Less accurate setting for other moves
#define EXACT_DELTA_MOVES 1
// Delta settings
#define DELTA_DIAGONAL_ROD 342 // mm
#define DELTA_ALPHA_A 209.5525
#define DELTA_ALPHA_B 329.39314
#define DELTA_ALPHA_C 90
#define DELTA_RADIUS_CORRECTION_A 0
#define DELTA_RADIUS_CORRECTION_B 0
#define DELTA_RADIUS_CORRECTION_C 0
#define DELTA_DIAGONAL_CORRECTION_A 0
#define DELTA_DIAGONAL_CORRECTION_B 0
#define DELTA_DIAGONAL_CORRECTION_C 0
#define END_EFFECTOR_HORIZONTAL_OFFSET 0
#define CARRIAGE_HORIZONTAL_OFFSET 0
#define DELTA_MAX_RADIUS 150
#define ROD_RADIUS 178.37
#define PRINTER_RADIUS 178.37
#define DELTA_HOME_ON_POWER 1
#define STEP_COUNTER
#define DELTA_X_ENDSTOP_OFFSET_STEPS 0
#define DELTA_Y_ENDSTOP_OFFSET_STEPS 0
#define DELTA_Z_ENDSTOP_OFFSET_STEPS 0
#define DELTA_FLOOR_SAFETY_MARGIN_MM 15
//#define SOFTWARE_LEVELING
#define DELTASEGMENTS_PER_PRINTLINE 24
#define STEPPER_INACTIVE_TIME 360L
#define MAX_INACTIVE_TIME 600L
#define MAX_FEEDRATE_X 100
#define MAX_FEEDRATE_Y 100
#define MAX_FEEDRATE_Z 5
#define HOMING_FEEDRATE_X 40
#define HOMING_FEEDRATE_Y 40
#define HOMING_FEEDRATE_Z 40
#define HOMING_ORDER HOME_ORDER_ZXY
#define ZHOME_PRE_RAISE 0
#define ZHOME_PRE_RAISE_DISTANCE 10
#define RAISE_Z_ON_TOOLCHANGE 0
#define ZHOME_MIN_TEMPERATURE 0
#define ZHOME_HEAT_ALL 1
#define ZHOME_HEAT_HEIGHT 20
#define ZHOME_X_POS 999999
#define ZHOME_Y_POS 999999
#define ENABLE_BACKLASH_COMPENSATION 0
#define X_BACKLASH 0
#define Y_BACKLASH 0
#define Z_BACKLASH 0
#define RAMP_ACCELERATION 1
#define STEPPER_HIGH_DELAY 0
#define DIRECTION_DELAY 0
#define STEP_DOUBLER_FREQUENCY 12000
#define ALLOW_QUADSTEPPING 1
#define DOUBLE_STEP_DELAY 1 // time in microseconds
#define MAX_ACCELERATION_UNITS_PER_SQ_SECOND_X 100
#define MAX_ACCELERATION_UNITS_PER_SQ_SECOND_Y 100
#define MAX_ACCELERATION_UNITS_PER_SQ_SECOND_Z 100
#define MAX_TRAVEL_ACCELERATION_UNITS_PER_SQ_SECOND_X 100
#define MAX_TRAVEL_ACCELERATION_UNITS_PER_SQ_SECOND_Y 100
#define MAX_TRAVEL_ACCELERATION_UNITS_PER_SQ_SECOND_Z 100
#define INTERPOLATE_ACCELERATION_WITH_Z 0
#define ACCELERATION_FACTOR_TOP 10
#define MAX_JERK 10
#define MAX_ZJERK 0.3
#define PRINTLINE_CACHE_SIZE 16
#define MOVE_CACHE_LOW 10
#define LOW_TICKS_PER_MOVE 250000
#define EXTRUDER_SWITCH_XY_SPEED 100
#define DUAL_X_AXIS 0
#define DUAL_X_RESOLUTION 0
#define X2AXIS_STEPS_PER_MM 100
#define FEATURE_TWO_XSTEPPER 0
#define X2_STEP_PIN ORIG_E1_STEP_PIN
#define X2_DIR_PIN ORIG_E1_DIR_PIN
#define X2_ENABLE_PIN ORIG_E1_ENABLE_PIN
#define FEATURE_TWO_YSTEPPER 0
#define Y2_STEP_PIN ORIG_E1_STEP_PIN
#define Y2_DIR_PIN ORIG_E1_DIR_PIN
#define Y2_ENABLE_PIN ORIG_E1_ENABLE_PIN
#define FEATURE_TWO_ZSTEPPER 0
#define Z2_STEP_PIN ORIG_E1_STEP_PIN
#define Z2_DIR_PIN ORIG_E1_DIR_PIN
#define Z2_ENABLE_PIN ORIG_E1_ENABLE_PIN
#define FEATURE_THREE_ZSTEPPER 0
#define Z3_STEP_PIN ORIG_E2_STEP_PIN
#define Z3_DIR_PIN ORIG_E2_DIR_PIN
#define Z3_ENABLE_PIN ORIG_E2_ENABLE_PIN
#define FEATURE_FOUR_ZSTEPPER 0
#define Z4_STEP_PIN ORIG_E3_STEP_PIN
#define Z4_DIR_PIN ORIG_E3_DIR_PIN
#define Z4_ENABLE_PIN ORIG_E3_ENABLE_PIN
#define FEATURE_DITTO_PRINTING 0
#define USE_ADVANCE 0
#define ENABLE_QUADRATIC_ADVANCE 0
// ################# Misc. settings ##################
#define BAUDRATE 115200
#define ENABLE_POWER_ON_STARTUP 0
#define POWER_INVERTING 0
#define AUTOMATIC_POWERUP 0
#define KILL_METHOD 1
#define EMERGENCY_PARSER 1
#define ACK_WITH_LINENUMBER 1
#define KEEP_ALIVE_INTERVAL 2000
#define WAITING_IDENTIFIER "wait"
#define ECHO_ON_EXECUTE 1
#define EEPROM_MODE 1
#undef PS_ON_PIN
#define PS_ON_PIN -1
#define JSON_OUTPUT 0
#define FEATURE_WATCHDOG 1
#define NUM_MOTOR_DRIVERS
I need a sanity check. My accel and jerk setting don't look high to me, I've tried tuning pots. Why won't my motors go? They just freeze and buzz. Drivers get hot and buzz.
