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

Out of five tried three - first bad out of box didnt work, spent 15-20 mins thinking wires are incorrect but it was just faulty one. - second, worked for 30 second, then stopped. but at least this allowed me to figure out correct angle for register - third, worked for a minute then stopped for all heat sink was on with a CPU fan on top of the unit. Input: 12V, 0.78A

Cannot beat the price but it does not do much good when 1 was no good from the begin another failed in 30 minutes and so far the other 3 seem ok at this point. I have had better luck with the A4988’s

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.

Works well for me. No quality problems. Would be nice to have decent instruction sheet.

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.

Dont know if I got unlucky or what, but one of them literally exploded on me and blew a chunk of the chip out

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

Worked great. No problems

Works fine on my genmitsu pro.