never mind I found it. I don't see a pin 4 in variants.h, that is the pin defined in the delta rumba32 bltouch example: IO_OUTPUT(Servo1Pin, 4) I did see pin# for pd15 #define PD15 63 //D63 so I edit

#define PA3   3  //D3

src > boards > stm32f4 > boards > rumba32.h #define PWM2_PIN PD15 // TIM4_CH4 This is the pin on the board that the BLTouch servo is wired to. What would be/determine the pin number fo

#define ZPROBE_ADDRESS &endstopZProbe

There is a hidden feature in Marlin called #define M114_REALTIME which gives the position in real-time - you'd need to use M114 R

#define IO_INPUT_PULLUP(name, pin) > #define IO_INPUT_PULLUP(IOFilamentDetector1, ORIG_Z_MAX_PIN) ?

#define IO_INPUT_PULLUP(IOFilamentDetector1, ORIG_Z_MAX_PIN)

#define NUM_SERVOS 1

Sure z axis has #define ZAXIS_STEPS_PER_MM 3194.75 steps per mm? With 2mm/rotation pitch 3200 would be normal but if microsteps did not get set it would be way off. Try with lower speed as well and ch

#define MAX_ACCELERATION_UNITS_PER_SQ_SECOND_X 1000

#define MULTI_ZENDSTOP_HOMING 0

#define STARTUP_GCODE ""

#define Z_PROBE_BED_DISTANCE 0

(I saw '#define REPETIER_VERSION "0.60"' on Configuration.h of its source code.)

#define Z_PROBE_BED_DISTANCE 0

#define SDSUPPORT 0

#define CONFIGURATION_H

#define ENDSTOP_X_BACK_MOVE 5

#define NUM_EXTRUDER 1

#define Z_PROBE_FINISHED_SCRIPT "G1 X0 Y0 Z2 \n G4 P300 \n M226 P18 S0"