To control the dual X-axis using both the X and E0 pins on the RAMPS 1.4, you can follow a similar procedure as you did for the dual Y-axis, but with a few important adjustments. I'll guide you through the necessary changes in Marlin firmware.
Make sure that both stepper motors for the dual X-axis are connected to the X and E0 pins (as you've already done).
Ensure both motors are wired correctly to the stepper drivers on your RAMPS 1.4.
In your configuration.h file, you need to enable dual X-axis functionality. Find and uncomment the following line:
#define X_DUAL_STEPPER_DRIVERS
This will tell Marlin that you have two stepper drivers controlling the X-axis.
In pins_RAMPS.h, you need to define the correct pin mapping for the second X motor, which is connected to the E0 pin. Make sure that the following line is set up:
#define X2_ENABLE_PIN 64 // This is assuming you're using the E0 pin for the second X axis. #define X2_STEP_PIN 60 // The E0 step pin (usually pin 60 for RAMPS 1.4) #define X2_DIR_PIN 62 // The E0 direction pin (usually pin 62 for RAMPS 1.4)
This will ensure that Marlin can control the second motor via the E0 pin.
In configuration_adv.h, look for the section for dual stepper motors and make sure that the settings are enabled for both X-axis motors. You should have:
#define DUAL_X_DRIVER_EXTRUDER_OFFSET_X 40 // Offset between the two X motors, adjust this value as needed.
This setting allows Marlin to account for the physical distance between the two X motors (if necessary).
After making the changes in configuration.h, configuration_adv.h, and pins_RAMPS.h, save your files and recompile the firmware.
Ensure that you have the correct board selected in the Arduino IDE (RAMPS 1.4 with an appropriate stepper driver configuration).
Once the firmware is uploaded, you can test the dual X-motors functionality by moving the X-axis using the control panel or G-code commands. Both motors should move in sync.
Potential Troubleshooting Tips:
If you’re still encountering compilation errors, double-check your pin assignments in pins_RAMPS.h to ensure they’re correct.
Also, verify that the configuration.h changes are properly saved and that the dual X-axis code is enabled in configuration_adv.h.
By following these steps, you should be able to control both X motors via the X and E0 slots on your RAMPS 1.4 board. Let me know if you need more assistance!