Need some help with my Rambo1.4

Software / Firmware
1

Hi there,
I have bought the v1 lowrider cnc with Rambo 1.4 and lcd.
After flashing the firmware for dual; Y1 and Z1 steppers don’t move, i have no problem with X, Y2 and Z2.
Changed the config in configuration_adv.h to this:
//#define X_DUAL_STEPPER_DRIVERS

#if ENABLED(X_DUAL_STEPPER_DRIVERS)

#define INVERT_X2_VS_X_DIR true // Set ‘true’ if X motors should rotate in opposite directions

#define X_DUAL_ENDSTOPS

#if ENABLED(X_DUAL_ENDSTOPS)

#define X2_USE_ENDSTOP _XMAX_

#define X2_ENDSTOP_ADJUSTMENT  0

#endif

#endif

#define Y_DUAL_STEPPER_DRIVERS

#if ENABLED(Y_DUAL_STEPPER_DRIVERS)

#define INVERT_Y2_VS_Y_DIR true // Set ‘true’ if Y motors should rotate in opposite directions

#define Y_DUAL_ENDSTOPS

#if ENABLED(Y_DUAL_ENDSTOPS)

#define Y2_USE_ENDSTOP _YMAX_

#define Y2_ENDSTOP_ADJUSTMENT  0

#endif

#endif

//

// For Z set the number of stepper drivers

//

#define NUM_Z_STEPPER_DRIVERS 2 // (1-4) Z options change based on how many

#if NUM_Z_STEPPER_DRIVERS > 1

//#define Z_MULTI_ENDSTOPS

#if ENABLED(Z_MULTI_ENDSTOPS)

#define Z2_USE_ENDSTOP          _XMAX_

#define Z2_ENDSTOP_ADJUSTMENT   0

#if NUM_Z_STEPPER_DRIVERS >= 3

  #define Z3_USE_ENDSTOP        _YMAX_

  #define Z3_ENDSTOP_ADJUSTMENT 0

#endif

#if NUM_Z_STEPPER_DRIVERS >= 4

  #define Z4_USE_ENDSTOP        _ZMAX_

  #define Z4_ENDSTOP_ADJUSTMENT 0

#endif

#endif

#endif

I have used this firmware:

IMG-3707
IMG-37072733×2801 2.32 MB

What have i done wrong?

2

That github is not the current version. We have moved to MarlinBuilder releases. There is a V1CNC_Rambo_DualLR that has what you want.

1 Like
3

Thank you Jeffeb3, it is working i also had to use different cables for the motors.

I do have another issue now. Whenever i am powering off my lowrider the z motor from the left dosn’t hold the position and is going down. What can i do?

4

Dropping is normal. Just park the gantry before turning off the motors.