Stepper current ratings (1A max for the LDO) vs M907 current ratings; are they RMS or peak?
I am looking into new steppers and noticed that the default current for X is 300mA and Y is 370mA, based on the settings in the firmware you can determine this. (it is value 16 for X which corresponds to 300mA in the conversion table in the firmware)
As the LDO's are rated for 1A and a lot of steppers are even beyond 1A, and are even underperforming when going below 50% of recommended/rated current (trinamic states this in their QSH4218 datasheet; the torque delivered is too close to detent torque and hence smoothness is reduced). I would like to use the QSH4218 but if they are not getting enough current to perform well it's kind of a waste of money.
I can supply sources on all my findings but perhaps someone who kind of knows about the situation can just answer the question that keeps me busy:
Is M907 settings peak or RMS? Is the 300mA for the X axis peak or RMS current? And how is it that 1A steppers are only getting 300-370mA? You can raise it with M907 but only a bit until you are forced to go info stealth mode; otherwise you will cause crash detection to go off as the regular current is already considered a spike and the crash detection is set off immediately. (And I don't plan to recompile the firmware for it.)
Thanks!