So I broke the USB connector on my old X5 mini V1.0 during a move and ordered an X5 mini wifi to replace it. I opted for the SD2224 drivers instead of the stock SD5984 drivers and may have made a mistake since I am dropping steps during infill moves. I have tried turning the speed down, setting the driver to spreadcycle instead of stealthChop, reducing my acceleration, and upping my current with no improvement. Do any of you have a suggestion that I can try other than ordering the SD5984s?
Post by 3DprintedLife on Jan 29, 2018 20:09:57 GMT
Well I never have used those drivers so I'm afraid I probably can't be of too much help.
First thing I would try is changing the step pulse duration in the config file. It should be 1 by default, try using 2 or 3. I seem to remember some drivers will behave strangely using the default step pulse size, and increasing it may help. If that doesn't work, I have a few potential suggestions.
You didn't mention anything about changing the jerk (called junction deviation in smoothie), try reducing that value and see if you notice any improvement. Also check your current setting and that the heatsinks are properly applied to the drivers. It may be overheating during infill moves which require rapid motions back and forth (draws a lot of power and heats up more than usual), and if the chip overheats it will momentarily power off to cool down before resuming.
If none of this helps, perhaps try contacting panucatt and see what Roy has to say, he may know a trick to get them to work.
Thank you so much! I dropped my current to 1.5A and set my jerk to 0.02 and its working and is even quieter than before.
Great! Although that current does still sound a bit high (assuming you are still running your printer at 24v). But if it works then don't mess with it, just keep in mind you can likely go quite a bit lower in the future if you want. It also would further reduce stepper noise. You can probably get down to 1A or lower with those drivers without losing any steps or accuracy!