Hobbypower StepStick 4-layer DRV8825 Stepper Motor Driver Module for 3D Printer Reprap RP A4988(pack of 5 pcs)

The purchase price was correct when I picked these up. Among the five however, had been inoperable upon shipping. Among the capacitors wasn't correctly soldered lower and shifted off its pad. Therefore, like another reviewer observed, have a look at these after shipping to ensure these were assembled properly. With that said, I educated the seller concerning the presssing issue, plus they refunded me the expense of the individual faulty driver panel. See picture for what my faulty plank looked like. I could probably salvage the proper part with a little bit of solder paste and a reflow.
These ongoing work, but I acquired to get adhesive to protected the heatsinks. These small heatsinks include adhesive tape on underneath typically. We were holding bare. Of the three I've tried you have a pot that turns however the VREF is usually erratic and I cannot modify the amperage.
excellent execution of DRV8825. operates properly and an easy task to hook up to any MCU tasks...just give consideration that those I obtained have incorrect pin marking for engine coils. afterwards, when uncovered, traced pins from IC to table headers...https://www.pololu.com/product/2133this is correct edition for header markings... connected pic from that web site...I've lost entire day coping with "wrong code", whilst it were incorrect header marking , therefore here go 2 stars :)
1 of these was damaged from the box. Capacitors weren't on the pads of this unit. Not really tested before delivered obviously. Appear at them under a microscope or inspect before making use of definitely.Furthermore heat sinks didn't come pre-attached or with a thermaI adhesive stickers to add heat sinks to the IC.
Connected this around my arduino for non-3D publishing uses also it worked a delicacy with my 1A phase stepper electric motor. Minus the heat sink actually, the chips heated up never. A good touch may be the known proven fact that each board is definitely packaged in its true anti-static hand bags.
Board have a lot of flux blobs, on the chipsets especially. Will demand cleaning before attaching the heatsinks.Talking about heatsinks, the package deal does not have anything to add them this. Ensure that you purchase thermal adhesive once you order these
I have utilized two of five without difficulties. Will upgrade if something arises. They far have already been solid so, build quality can be weaker than pololu slightly, but you have more than you purchase for what it's worth.
Among the boards experienced solder linking two of the pins onto it, the others of them study zero volts of POT tuning on the RAMPS panel regardless. Finished up just investing in a replacement from the 3d printer manufacturer (which worked without issue after some slight tuning).A $5 purchase isn't worth the trouble of returning, but I am going to not possibly be ordering once again.
All 5 of the proper parts I obtained measured zero volts for Vref, regardless of the potentiometer establishing. Wasted 2 whole times with this and ordered the initial from Pololu after that
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