Till

I am quite sure, that the "calibration" process does not actually result in anything close to absoulte degrees. It can only be a relative degrees given by the motor precision...

I would recommend you select TB6600 as stepper drivers for S42B in Marlin. Even A4988 is still a too fast communication for the S42B. This change does not have a...

did you already do te steps in the manual? dip 4 is write protection of calibration data. dip 3 is closed loop vs open loop mode. dip 1,2 set microstep...

@davidcgu you could take a look at #19 as this solved it for me for all stepper motors I tried.

I would generally expect that the S42B setup is always running a bit hotter regarding the "total area" around the motor, if it is running under full mechanical load for...

The display issue seems to have two root-causes. 1. 450-460kHz buck converter frequency 2. Big Jitter on SPI-clock if SPI-data is transmitted Regarding 1. increasing the F_OSC or internal clock...

testing by other contributers still showed issues with display glitches. A brute force re-init every 20sec is now my proposed measure of last resort.

changed re-init of OLED to ~60 seconds.

do you have a datasheet for your nema17 motors? E.g. the inductance, resitance and current rating? And what supply voltage do you use for the S42B (12V or 24V?)

ok, and changing the motor current does change the screaming frequency? I had loud motors only, if I wired the phases incorrectly (A1,A2,B1,B2 S42B output but some motors are A1...