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We are sorry to hear that any of our customers had your experience. We are striving continuously to improve our processes and very recently shifted resources and processes around to make many improvements to our customer support process. If you still need help please do not hessitate to contact us through our support ticketing system by clicking support from the printm3d homepage.

-M3D Team

Oh. I see.

The settings of the GCONF register is set right after assigning bit flags.

So, GCONF_INT_RSENSE is set to zero (since it wasn't called at the DefaultGConfReg = ...). Got it.

I noticed the maestro is using external sense resistors, for their stepper motor drivers.

Going back through the TMC2204 datasheet, the driver has an optional internal sense resistor. The datasheet requires a setting --- otp_internalRsense = 0 --- in order to run external sense resistors.

(snippet from the TMC2204 datasheet)

I'm looking back through 2.02 source code, and find that it might not be set to use external sense resistor

Pic above in TMC22xx.cpp (.../src/Movement/StepperDrivers). Release: 2.03beta2

Am I misinterpreting something or is the source code setting the driver to using the internal sense resistor?