[chbot] Question regarding stepper motors

[Michael Dawson]

OK Measuring 5.7 ohms through a phase.

Does this suggest it's not a 1.33A?

Cheers
Michael

On Mon, 24 Feb 2020 at 14:24, Mark Atherton <markaren1 at xtra.co.nz> wrote:

> 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> 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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