[chbot] Question regarding stepper motors

[Mark Atherton]

So, a bit like https://www.banggood.com/search/990669.html

Looks like the standard length is 34mm, colours may be standard, and 
weight is 220g. Allowing 12g for your gear, this all sounds very similar..

Your part number is D42HSC1413B-24, so it looks like the D42 part could 
be associated with faceplate size.

googling "d42hsc" stepper motor indicates that d42hsc may be the family 
of the part you are looking for.

The DC resistance of the Bangood part above is 2.1ohms per phase.

If you can measure low resistances with accuracy, see what your 
resistance is for one phase. Or pass 200mA through a phase and measure 
volt drop.

-Mark






On 24/02/2020 1:32 PM, Michael Dawson wrote:
> 4 wires into a 6 wire plug, colours from left looking towards the 
> motor, black, space, red, green, space, blue.
> Dimensions 42mm x 42mm Faceplate x 33mm depth of motor.
> 232 grams weight including cog, can weight without that is that would 
> help.
>
> Cheers
> Michael
>
> On Mon, 24 Feb 2020 at 13:06, Mark Atherton <markaren1 at xtra.co.nz 
> <mailto:markaren1 at xtra.co.nz>> wrote:
>
>     Hi Michael,
>
>     Welcome aboard.
>
>     A few parameters which may be useful:
>
>     - How many wires, what colours
>
>     - Overall dimensions
>
>     - Weight
>
>     Regards, Mark
>
>
>
>     On 24/02/2020 12:25 PM, Michael Dawson wrote:
>     > I am trying to calibrate the A4988 drivers for the stepper
>     motors for
>     > my laser engraver/cutter, using Arduino Uno and the CNC shield,
>     > (because the one that came with the cutter was pirated software and
>     > didn't work how it was supposed to and I want to run laserGRBL
>     anyway).
>     >
>     > The issue I am having is, I have not got the specs for the stepper
>     > motors and aliexpress did not provide the specs.
>     >
>     > I think they are nema17, but the only hint I have to that is
>     that when
>     > I search on the number etched into the motors D42HSC141B-24 I
>     find an
>     > old banggood ad saying they are nema17 but if you click on the link
>     > the original ad is long gone.
>     >
>     > I currently have them set to 0.952v when measured connected to the
>     > arduino and cnc shield which is what was suggested, if they were
>     rated
>     > to 1.7A. I'm hoping that is correct for these steppers, so I
>     guess my
>     > question is does anybody have these same steppers and know the
>     specs,
>     > or do they know it they are indeed rated to 1.7A
>     >
>     > Or is there a way to find the Amp rating other than the etching
>     on the
>     > side of the stepper?
>     >
>     > Any help would be much appreciated.
>     >
>     > Oh hi BTW, my name is Michael, one or two of you may know me, I ran
>     > Red Dwarf BBS back in the day, (I just remembered, I had the Red
>     Dwarf
>     > logo display in RIP script when you logged in, pity that never
>     really
>     > took off.)
>     >
>     > Michael
>     >
>     >
>     >
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