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I want to buy the board Ramps 1.6 Plus. The description in the link says that is compatible with the driver TMC2130, but I found that there are two versions soldered in SPI mode.

  • BIGTREETECH TMC2130 V3.0. Where the diagnosis pins are soldered as well

  • TMC2130 V?. In this other product those pins are not soldered and I believe it will fit in the board

comparison

As you can see in the image other boards like the SKR 1.3 have some socket to plug in the diagnosis pins. But I don't see something similar in the Ramps 1.6, which has male pins instead.

  • Should I remove those pins in order to plug the driver? Or is there a better way to proceed?
  • I don't really know what the diagnosis pins do, are they really necessary? Should I buy the second option without those pins soldered to avoid problems?
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Well I found that I can use a DuPont cable to connect the diag1 pin to the right endstop

enter image description here

There is also a beta functionality in the Marlin firmware I haven't tried: Just uncommenting SPI_ENDSTOPS definition

    * SPI_ENDSTOPS  *** Beta feature! *** TMC2130 Only ***
    * Poll the driver through SPI to determine load when homing.
    * Removes the need for a wire from DIAG1 to an endstop pin.
    *
    * IMPROVE_HOMING_RELIABILITY tunes acceleration and jerk when
    * homing and adds a guard period for endstop triggering.
*/
#define SENSORLESS_HOMING // StallGuard capable drivers only

#if EITHER(SENSORLESS_HOMING, SENSORLESS_PROBING)
    // TMC2209: 0...255. TMC2130: -64...63
    #define X_STALL_SENSITIVITY  8
    #define X2_STALL_SENSITIVITY X_STALL_SENSITIVITY
    #define Y_STALL_SENSITIVITY  8
    //#define Z_STALL_SENSITIVITY  8
    //#define SPI_ENDSTOPS              // TMC2130 only
    //#define IMPROVE_HOMING_RELIABILITY
#endif
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