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Re: 0.9° Stepper - Worth it?

October 17, 2019, 9:01 am
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deltas: yes it helps
others: no it just limits your top speed. (needs twice as many steps/mm)

Take a look at a reprap calculator
1.8 degree steppers gives you a theoretical 5 micron resolution in XY using standard components
0.9 degree steppers gives you 2.5 micron...

Its unlikely you will see the difference.
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Re: 0.9° Stepper - Worth it?

October 17, 2019, 10:14 am
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Thanks Dust.

I'll use the ones I have.

Aamcle
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Re: 0.9° Stepper - Worth it?

October 19, 2019, 5:06 am
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I used them on my CoreXY printer - reduced the noise considerably.
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Re: 0.9° Stepper - Worth it?

October 22, 2019, 1:16 pm
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Quote
David J
I used them on my CoreXY printer - reduced the noise considerably.

With good drivers there is no noise
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Re: 0.9° Stepper - Worth it?

October 27, 2019, 2:27 pm
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Quote
obelisk79
Quote
David J
I used them on my CoreXY printer - reduced the noise considerably.

With good drivers there is no noise

I use a Duet board - which has very good drivers.
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Recomend a stepper driver for Nema 17 Motor

November 20, 2019, 1:45 am
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Re: Recomend a stepper driver for Nema 17 Motor

November 20, 2019, 2:47 am
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with steppers you need minimum 2 * the listed voltage, preferably more

You first stepper is listed as 12v, minimum you need 24v. The current rating is fine for a pololu A4988
The second stepper is also says its 12v but it you multiply the resistance 2.3 by the current 1.5 you get 3.45v also fine for a A4988 (this is good for a 12v system)

Any standard reprap drivers will work on both of these, if you supply enough voltage.
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I damaged TMC 2208, connected it wrongly (td)

November 24, 2019, 2:51 pm
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Like in topic, but it is not completely fired, it runs the motor in the same direction does not matter do i send a command to move it right or left always spin right.
Does chip was fired or there is a change to save it by replacing one of other components ? I have some soldering skills on SMD component so should be able to replace it (replacing chip it's not worth it better buy new stepper)
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Re: Recomend a stepper driver for Nema 17 Motor

December 1, 2019, 1:14 am
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Indeed A4988 is perfect. How did you burn the stepper driver?
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When extruder motor is on, axis motors not working

December 3, 2019, 10:27 pm
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Hello everyone. I am using repramp 1.4 board. For the axis I am using stepper driver tb6600, and for the extruder I am using A4988. I am using Marlin firmware. My configuration is double extruder. The problem is when I am going into prepare mode, I can move extruder motor and axes motors separately, but when extruder motor is working I cant move axis motors. Any suggestion where should I look for solution, what may be wrong? In attachment I add my configuration.h file. Thanks in advance.
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Re: When extruder motor is on, axis motors not working

December 4, 2019, 7:02 am
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In Marlin I use, this allows for EFBE or EFBF configuration

#define MOTHERBOARD BOARD_MKS_BASE_14
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Which Stepper-Motor should I buy :S

December 8, 2019, 10:44 pm
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mir sind vor ner woche meine Motoren abgeschmiert, weil sie in eine ecker gerammt sind (bltouch kabel gelöst) und jetzt muss ich mir neue Motoren kaufen. Ich würde sagen ich kaufe mir einen E3D High torque für die z achse und 2 compact but powerful für die x und y achse. Irgendwelche einwände oder vorschläge was besser wäre? LG - Daniel


my motors broke a week ago because they rammed into a corner (bltouch cable unbound) and now I have to buy new motors. I would say I buy an E3D high torque for the Z-axis and 2 compact but powerful for the x and y-axis. Any suggestions that would be better? Thanks for your help - Daniel
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Re: Which Stepper-Motor should I buy :S

December 8, 2019, 11:29 pm
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What printer do you have, what electronics, and what stepper drivers?
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Re: Which Stepper-Motor should I buy :S

December 8, 2019, 11:51 pm
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I have an heavily modified Ender 3, an skr mini e3 with tmc 2208/9 not quite sure
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Re: Which Stepper-Motor should I buy :S

December 9, 2019, 11:31 pm
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Re: Which Stepper-Motor should I buy :S

December 10, 2019, 5:00 am
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Re: Which Stepper-Motor should I buy :S

December 10, 2019, 10:51 pm
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Both those motors are rated at 1.68A. It's usual to run stepper motors at a peak current between 60% and 85% of rated current. Above about 85% they get too hot. So for those motors, that's about 1A to 1.4A. That 1.4A is a little high for TMC2208 drivers, but possible with good cooling. Should be no problem if your drivers are TMC2209.
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Re: Which Stepper-Motor should I buy :S

December 12, 2019, 9:23 am
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my drivers are tmc 2209 i looked it up in the specs, so should i buy them?
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Re: Which Stepper-Motor should I buy :S

December 12, 2019, 12:43 pm
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Yes, those motors should work well with TMC2209 drivers.
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Stepper Hold Current

December 12, 2019, 11:49 pm
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G'Day Gang,
Is it possible to limit stepper hold current with Marlin Bugfix 2?
TIA
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