KINGPRINT DRV8825 Stepper Motor Driver Module with Heat Sink for 3D Printer Rrerap Ramps 1.4 A4988 (Pack of 5pcs)

Prompt delivery, stepper drivers worked as replacements for A4988 drivers with minor software change to accomodate 1/32 stepping.

UPDATE 03/21/2019 New Title says it all. Arrived early February and installed in a RAMPS board, set to 0.82MV and all good. Well, all good for about 16 hours of printing anyway. Just pulled them all out and have gone back to the A4988 after the second one failed. It is a pity as they quietened the printing down a lot with the 1/32 Micro-stepping. I am a bit surprised as I am a fan of Kingprint with with several main boards that have proven to be exceptionally reliable, but this latest batch of drivers -- not so much it seems. This is the second batch of DRV8825 I have had from them. The first lot bought in mid 2018 have been excellent and still running reliably. Will order from a different supplier and try again.

was pleased with this

I installed these in an Anycubic Kossel liner plus delta printer and it has made a big difference in the amount of heat that is generated. I have theses set for about .7 amps and they runs silent and cool, the steppers no longer make the whine and are cool to the touch after a 2 hour print. I replaced the heatsinks with something that was a bit larger and added a fan to the enclosure. No problems with any of them so far.

Great

I bought these for lab use to test/analyze motion controller behaviors only to discover that these little drivers need much support circuitry before theyll function. These drivers will also drive from their own noise, meaning once stepping has started it might never stop! These might be okay drivers for those who know them well, but if youre a first time user of these like me I say AVOID!

Excellent product. Was shocked to find out it supports 1/32 stepping. As always, very your voltage before attaching your steppers. Mine were all around 0.6V except one that was at 2+V which could have fried my motor.

Two of them died in the first 10 minutes. One literally blew up. I dropped in some 4988 parts and they worked fine. I had set the current to 1.2 amps and put heat sinks on. Super low price but not worth it.

They work very well. Only issue is the adjustment screw on 2 of them does not turn any more.

I bought a Bigtreetech SKR V1.3 and shortly after I bought these realizing I needed stepper drivers. I was only getting about half this distance for moves after configuring and installing Marlin on the SKR. Turns out when I configured Marlin I had just quickly referenced this page at a glance saw the familiar A4988 in the title, which is the default stepper setup in Marlin. After looking at the page more carefully I changed the stepper drivers to what it should be in the firmware (DRV8825) and this fixed my problem. Hopefully this review can save someone time.