Nema 17 intergrated servo motor possible?

rabbit

Here are some pics from the printer

and from the final belt reduction gear:

mrehorstdmd

@rabbit Looks great! That was 3:1 reduction? Can you post the M569 statements from config.g? Are there any special config tweaks?

rabbit

yes that's the 1:3 reduction with a 60t and a 20t gt2 belt.

M569 P5 S1 T3.5                                  ; physical drive 4 goes forwards
M569 P6 S1 T3.5                                  ; physical drive 4 goes forwards

I set the rigidity of the motors (Parameter P01-03) to 22.

taylo708

@rabbit I set the rigidity of the motors (Parameter P01-03) to 22.

How do I change this parameter? Do I just buy a cable and download a program? I too am getting a salmon finish to my prints. I have a 2:1 reduction in the Y but not in the X. I would like to try to reduce the effects of this if possible with tuning. If not I may look into other motors or possible mechanical reduction.

mrehorstdmd

@taylo708 I have been gathering iHSV servo info on a blog page here: https://drmrehorst.blogspot.com/2020/04/ihsv-servomotor-information.html

You need a USB to RS-232 adapter like this one to program the driver parameters: https://www.amazon.com/UGREEN-Converter-Adapter-Chipset-Windows/dp/B00QUZY4UG/ref=sr_1_3?dchild=1&keywords=usb%2Brs232%2Badapter%2BPL2303&qid=1592150850&sr=8-3&th=1

There are many different ones made- just look for the PL2303 chip and it should work.

You'll also need the software for programming the motors - there's a link on my blog page for that.

taylo708

@mrehorstdmd

Your blog is phenomenal! I have been trying to find information on these for about a month. I finally got them working but always wanting better.

mrehorstdmd

@taylo708 Thanks! What is the filament you used in that print? It's beautiful!

If you find any info I don't have yet, send me a link so I can add it to the blog post.

3DPMicro

I noticed the voltage on those servos is advertised as 24. Is there a maximum or range stated in it accompanying literature?

mrehorstdmd

@3dpmicro The manual here says 24V for the NEMA-17 size motors. The NEMA-23 motors are good for 36V.

jay_s_uk

I've just ordered a couple of these from china to play with.
£60 each at the moment https://www.aliexpress.com/item/1005002331999899.html

3DPMicro

@mrehorstdmd thank you

mrehorstdmd

@jay_s_uk I ordered 4 of them. That's the best price I've ever seen on them.