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Homemade 3d Printed Stepper Motor
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- Опубліковано 8 кві 2013
- This is a programmable stepper motor and driver that I made out of some nails, magnet wire, neodymium magnets, a digispark microcontroller, and a 3D printed piece that I designed around these things. My goal was to make something about the size of a business card that moved. You can't exactly fit it in your wallet but it does indeed move. It just a first draft- there's lots of room for improvement. It has a step angle of 15 degrees (although the way I'm driving it, it is 7.5 degrees.) I saw a schematic diagram explaining how a stepper works with eight electromagnets and six permanent magnets in the center and I thought that layout might look cool. It also does illustrate well how stepper motors work. The white parts were designed in a CAD program, made from WSF material and printed at Shapeways. The ends of the shaft are cone shaped and pointy. They are held in place by slightly wider conical indents. The shaft was slightly longer than the space and I got it in there by pulling it open a little bit. The material needed to be flexible for this. The magnets are held in place by epoxy. (It's not fun working with strong little tiny magnets that want to stick together but are also covered with epoxy. It was a mess and there was swearing. It was also important that they all be oriented with the same polarity facing out.) The driver chip is a uln2003 transistor array and it is being controlled by a digispark which is a little arduino compatable microcontroller. It can be programmed by plugging it in the usb, but it needs an external 20V source to run it. (I know 20V is high but I just kind of guessed with the electromagnets and that's what they needed to run. Originally, I had it work with12V with the electromagnets repelling the rotor instead of attracting it, but I think that began to demagnetize the rotor magnets and it gradually stopped working.) In this video, I just have it run through a series of movements to show that it really works. I find it's best to shoot your project videos soon before you fry something and it doesn't work anymore. Not that that is going to happen here....Anyway, thanks for watching.
Everyone knows how " things " work, but only a few knows how to make it. Great work. I will definitely make something similar with my kids... since i don't have a 3d printer wood will might be an alternative.. And for your next project you could always make me a 3d printer ;)
That's pretty neat feller! Nice work!
Whoever created this is a Champion.
nice useful for education process
very good for education in schools, bravo
Well done!
Thats what we want! Next step 2nd extruder to layout some traces :)
yo dawg I herd you like stepper motors, so I made a stepper motor with stepper motors.
Nice work !!..
sounds crunchy
awesome!!
Very impressive.
Excellent!!!
Nice
Very well done!
Interested in posting it as a Thingiverse Thing + Instructables for Step By Step? :) Awesome Product!
Wauw.. very interrested! Can i buy it? Thanks!
legendary! :D
That's amazing!
nice job there dude :) quick question, how are the magnets orientated?? is it all south pole or all north poles?? or a mix???
sooooo cooooolllllll
good job bro.have you other model for this motor
would appreciate if you can share the winding pattern
Any downloadable files Christopher?
Great work, but a little clunky. So can you microstep it now? ;-)
Any details on the coil windings and the 3d model?
did you ever figure the coil winding?
awesome job :) well done
Can u please explain all the contenents in this motor specially the electronics
very impressive!
how much torque?
Why does it chatter on some steps? I thought I saw some of the coils moving a little bit is that what the chattering is or is it something else?
Coool Can you share the stl so we can give it a go ?
i know it been a long time ago you made this video, Can you help me with the stater pole winding direction, please,
Wow.
360/(8*6)=7.5 Means there are 8 coils and 6 magnets, which make 48 steps per revolution. 360 degrees divided by 48 steps = 7.5 degrees per step. The hard part is figuring out how to wire the coils and then the firing order.
Think:microstepping
Cool, what is WSF material and how much did it cost ?
I made an ez-spin pulse motor and printed it out in PLA Plastic. I think mine cost me about £5 in material to print.
3D_Printing White - strong - flexible, should have taken a look at shapeways - lol. Still don't know what it really is though,
Just saw this featured on Hackaday.
Very nice build! It looks like it runs quite well! Any chance of any more info about how you're controlling it to get 7.5 degrees from 8 coils?
chris i put you the like now you have to put me a 100% in the exam
Nice project, sir. I would like to give you an internet or two.
bien chris bien
Defcad !
tutorial?
this was damn nice to look at, hope you won't mind some reverse engineering on my part :P
keep up the good work, man!
Are you going to make the files available? I would really appreciate it, especially along with instructions.
How strong do you estimate the motor to be
i hardly think a plastic garage hack stepper motor is going to be hijacked by makerbot/thingiverse. not like you can use this for any useful work, and the design is already well known, MANY companies make real stepper motors already, if they wanted a plastic one, they would likely just adapt their own design. this is just an interesting science project, so there is no other use for it but uploading to thingiverse.
to bad you can't ban wire.
ah ah ah
And that means? That is about as useless an explanation I could have asked for! I can do basic math thanks, I was asking for DETAILS halibut breath!
No, no & no. The TOS of both Instructables & Thingverse are too oppressive. Using them possibly could kill any open hardware/source nature, assuming that Christoper is going to release this as open hardware. I'm sure there are better methods or services to use to share. Instructables & Thingverse are are OK for sharing Run of the mill DIY projects, but this isn't run of the mill.