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

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.

Great DVR8825 drivers. Noticable difference in print quality on my 3D printer.

was pleased with this

works as advertised. no issues so far!

They worked OK but not an improvement over stock A4988s

I would buy again. Great price for what you get

No documentation make sure whatever you are replacing they are going in the correct direction as these are opposite of the ones you might be upgrading.

Defected on first installation. VREF is not adjustable.

2 of the 5 units purchased were dysfunctional. 1 just did nothing, while the other got hot and did nothing other than get hot. on the plus side, the other 3 units worked as intended. buy extra I guess.

Pretty solid. Its a straight pololu rip-off, so I kind of feel bad cheaping out on it, but the budget was tight for a school project. I killed a couple (as well as an arduino) trying to drive a stepper over 24 volts, so be careful, and keep it several inches from the microcontroller on your board. If theyre packed together, the pins can arc to the arduino and fry both.