Problem with AM882 drivers !..... or it could just be me !

[Shinobiwan]

Hi Buba

The drives don't have an analogue or digital mode, you can't switch between the two. Its a hybrid. The pulses enter the drive as an analogue signal, this is converted to digital using a ADC, the drive does its magic using a DSP and then its sent through a DAC to the amplifier and out to the steppers.

If your not getting the correct distance that's a Mach and user setup issue. The drives are set to 8x microstepping by default and I'd recommend leaving them at that. You can confirm by connecting the drives to the PC using an RS232 cable. What pitch are your screws? From there you can work out your steps per.

I'd recommend sticking with them, they're far superior to the gecko and any other analogue drive. They do things those drives can't do such as higher acceleration, smoother running and more speed. If you do sell them let me know and I'll have them off you for a mill conversion I'm looking at doing.