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Thanks again for your reply. I finally found the solution; PWM modulators are indeed used for voltage compensation (see section 9.1.10 of the datasheet), using the KVAL. My power supply si 12V, motors have a nominal 2.4V. I set up my acc and run kval at 51 (255 would be 12V, no compensation, 51 is t...

Isn't it why the driver uses PWM to drive the steppers, to get the max available torque using a "too high voltage" ? From what I learnt, all steppers have low coil tensions, and the driver must know how much current it "sends" to get the maximum torque without heating too much, and thus uses PWM. Wh...

Thanks for your reply! I don't have much info on my Chinese steppers , just got these values :2.4V, 1.7A ,1.5 ohms resistance and 3.2mH inductance. They should be compatible shouldn't they? I could not find a precise guide explaining how to set the Octhresh, running kval etc to the proper values giv...

Hi all. I have my 4 autodrivers V13 hooked up and working properly with an arduino mega, just a weird problem is occuring : the steppers never complete large movements or continuous rotations: If I use mystepper.run(FWD, 300) once for example, it runs for about 2 seconds then stops. If I put the fun...