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Multi-Stepping in Marlin

RishabhX3576

Multi-Stepping in Marlin
March 17, 2018 12:58PM

Registered: 6 years ago
Posts: 6

I am building a 3d printer using NEMA 23 motors and external stepper driver DM542, which can do 1/256 microstepping.

I desire to run this printer at 1/4 microstepping for X and Y axes for 0.025mm resolution.

Is there any step multiplication in Marlin which can let me achieve 64/256 microstepping?
(I am trying to imitate Trinamic TMC2100 here, which extrapolates 1/16 to 16/256)

(64 step pulses per 1 logical step pulse)

Where and how to set it up?

Edited 1 time(s). Last edit at 03/17/2018 12:58PM by RishabhX3576.

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Dust

Re: Multi-Stepping in Marlin
March 17, 2018 07:12PM

Admin
Registered: 13 years ago
Posts: 7,000

no. 8 bit controllers just cannot put out that many pulses/sec. Which is why divers using interpolation are used

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RishabhX3576

Re: Multi-Stepping in Marlin
March 17, 2018 11:23PM

Registered: 6 years ago
Posts: 6

I was going to use DUE+Shield combo.
Might design my own shield.
Does Marlin4Due or any other 32bit Marlin derivative supports multistepping to this extent?

Also, how can I achieve 4/16, 8/16, or 16/16 multistepping on MEGA R3 + RAMPS 1.4?
I have an old printer running on this combo.

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mohala

Re: Multi-Stepping in Marlin
April 12, 2018 06:51PM

Registered: 6 years ago
Posts: 3

I'm interested in this too.

But from my understanding, I looked about the DM542 it's 128 micro stepping if you look at page 7 of the manual.
[robokits.download]
But they say its using a 1.8 degree motor would it make it 256 microstep when using a 0.9 degree motor?

Mo

Edited 3 time(s). Last edit at 04/12/2018 07:10PM by mohala.