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After the merger is completed, you can download the firmware from the official website of Marlin. TMC2130 SPI/TMC5160 SPI ,only with 5pcs cable, SKR PRO has onboard SPI function,so TMC2130 SPI /TMC5160 don’t need to use cable on SKR PRO. In this video I run through the basics of getting the Bigtreetech SKR V1.3 board running with TMC2130 SPI drivers for a CoreXY printer with Dual Z Axis.
I observe Marlin is not fully compatible to Deltas+TMC2130+SKR 1.3+SENSORLESS First, in Marlin Deltas should home to MAX Endstops but on SKR board DIAG1 pin on stepStick hardwired to MIN Endstops. In this case I had to swap pins in pins_BIGTREE_SKR.h, but that feels just not right. Then, Z probing cannot use the same pin as Endstop.
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I had the same problem - it is the TMC2130 driver issue. Disable the StealthChop (silent) mode on the Z axis in Marlin and the issue will be gone. My hypothesis is that the driver expects certain impedance of the motor to be connected for the StealhChop mode to work correctly and when you connect two motors to the same driver this isn't ... Lesson 4 homework practice.
Blue Marlin Dive has a passion for technical diving and continues to be the leading award-winning technical dive school in Indonesia. Blue Marlin founder and owner, accomplished TDI Instructor Trainer, Simon Liddiard continues to demand high standards for training in the industry.