Microstepping in relation to deviation?
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My build is a 1m delta and I am stuck at .045 being the lowest deviation I can achieve. I am currently running 1/32 microstepping with interpolation on .9 NEMA 23 motors. Would there be any benefit to dropping to 1/16 with interpolation.
(On another thread I read about adjusting belt tightness, and plan to do that tonigt)One other question, can anyone explain deviation and how it is calculated?
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Interpolation only works with 16 microsteps.
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With x16 microstepping and 0.9deg motors, the theoretical resolution is 5um using 16 tooth pulleys (200 steps/mm). That's quite a lot less than the 45um deviation you are getting, so using higher microstepping is unlikely to help. I get around 25um deviation with this setup, using linear rails and Smart Effector.
Deviation visit the root mean square average of the height error at the probe points.
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@dc42 I am using 20 tooth pulleys and have set my steps accordingly, is there possible benefit to me using 16?
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You get to use interpolation
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@phaedrux said in Microstepping in relation to deviation?:
You get to use interpolation
To avoid confusion, I believe @jackatom74 is refering to a 16 tooth pulley. Not 1/16 microstepping.
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@timcurtis67 I guess I shouldn't browse the forum before coffee.
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@Phaedrux Yeah I do that all the time...
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@dc42 said in Microstepping in relation to deviation?:
Deviation visit the root mean square average of the height error at the probe points.
Thank You DC42, Something clicked in my head and I went back and looked at the the repeatably of my trigger height and started messing with the smart effector sensitivity. Correcting this fixed everything. I am around 20um deviation now, Also thank you to everyone else who lent me their guidance.