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

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.

I bought these to replace some other DRV8825s I purchased off of eBay that would miss steps. These work great and are relatively quiet. Im using these on a RAMPS 1.4 board with an Arduino MEGA 2560.

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.

These work just fine. Remember to adjust the screw for what you need. If running for a long time keep a fan blowing on them or keep a few spares on hand.

These little boards are a great replacement for the standard 16 microstep driver and provide a 32 step option. If used to increase microsteps and quiet the stepper motors, Marlin software or printer settings must be changed for double the step rate or measurements will be off by 2X.

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.

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

Great

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.

1 dead on arrival Also missing one heatsink The other four are working seem to be no more noisy than other steppers I have heard