Hey all,

I was recently looking up info about the DRV8825 to answer a question and I spied this: [www.pololu.com]. It's the DRV8824, a lower current version of DRV8825. What intrigued me was this: "...it has larger current-sense resistors that allow for improved microstepping performance at low currents." My electrical motor control knowledge is minimal, so I was wondering: what exactly does this mean? Smoother motion? Better repeatability? Marketing drivel?

I'm slowly building up the parts to build a delta robot to replace my Prusa, and I planned on switching to the 8825 at some point for the increased microstepping for quieter motion. I was curious if the 8824 would work better in a delta. My uninformed reasoning was that since there is so much less mass to move the extra amperage/torque wouldn't be necessary, but possibly more repeatable/controlled microstepping would result in smoother motion and prints.

Thanks in advance!

I guess it means that the current sensing has a higher resolution but a lower range. That would mean it can achieve better control of low currents.

So it sounds plausible, but could still be marketing bs