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They're most likely 1.7A. I have one of these as well but I immediately upgraded the steppers to 92 oz/in motors and DRV8825 drivers so I don't have much advice in the way of adjusting the A4988...

I haven't done the exploded version but I did assemble most of the parts minus the one I'm missing and one that I'm not sure where it goes. I think I got most of the orientation right although...

It's a fun design and you seem to have thought a lot of it through fairly well. I had something like this in mind once upon a time but life gets in the way as we all know.

I've broken the dxf...

I'm also working on a 3D exploded view but I've been having to add the duplicate parts after I identify which ones they are. I have a few issues regarding a few of the parts as well. In two of the...

I've done some magic with the .dxf files and turned these into 3D versions in Blender and Openscad. I had to manipulate things to get them to work but I don't think that will be much of an issue for...

I did find this http://www.intechopen.com/download/pdf/13718 though the math in that is way over my head. I saved a copy just in case.

I also picked up a copy of Power Electronics Handbook to get...

Interesting read. I wonder if this might make a good spindle given the right electronics to control it? The tolerances on the gearbox shaft are tighter than any motor I've ever encountered. Of...

I've never even heard of such a thing but I do believe it's a military item after all.

I'm doing some reading and I'm assuming between this, Reluctance motor - Wikipedia, the free encyclopedia and...

I decided to pull it apart and see what it contains. Very well made to say the least.

All four leads generate additional torque when held together and the shaft turned. No pair of leads will...

I pulled a transformer out of an APC PowerStack 450 and am having a real problem identifying what this transformer is and does. There are 4 leads on the primary side and all are 18 awg wire. There...

The odd thing is that I get a varying reading depending on where I measure. If I use black as the common I get red 42, white 32, green 54. If I use the green as the common I get red 54, white 22,...

I know this is rather necro-bumping but I have finally identified this as a shunt-wound dc motor. I've no idea what the voltage/current requirements are but the minimal ohm reading across the leads...

I wish that I had two of these so I could dissect them to learn the technology. As it stands, I can't. If I were to take them apart to a certain point and take pictures would that help to identify...

Has anyone seen any schematics relating to using this chip and perhaps a source for smaller quantities of the dip package? Part availabilty seems scarce unless you want to do a high volume purchase...

Well, now. A couple of other questions related to that then. Is there a way to measure the specs of the motor itself using a multimeter or something? Would this sort of motor be able to be used as...

I got this particular motor as part of an assembly off of e-bay. I'm not sure what the assembly was or what it did but it had a ton of bearings and gears, what looks to be encoders for positioning...

I just realized that I should have attached a picture too. Sorry about that.

How does this look for a bedframe rails design? I'm trying to do a design as cheaply as possible. I have an old cot frame with a trundle under it that my girlfriend was going to throw out when...

Well, that was informative. See this pdf for some nice in depth gear theory.