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I can not find anywhere default steps per unit for Makerbot replicaor 2. I'm using Ramp V1.4 instead original board and need to know default steps :/

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The Replicator 2 and 2x use 18 tooth GT2 pulleys, 1/16 microstepping, and 200 steps/rev steppers. That makes the proper steps/mm value 88.888889.

Note that Makerbot used ~88.56 steps/mm in their defaults, which is the value you get if you calculate from the belt+pulley pitch diameter from the Gates GT2 specs. But this is the value you use for calculating belt length required in a closed loop, not for steps/mm. The 88.88... number is more accurate.

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  • $\begingroup$ Hey once again, what about z axis then? $\endgroup$ – Anton Osadchy Mar 7 '16 at 17:47
  • $\begingroup$ Z is 400 steps/mm. (8mm lead, 1/16 microstepping, 200 steps/mm motor.) Sidenote, make sure you don't over-drive the Z stepper with plug-in drivers, it's only rated to about 0.4A. $\endgroup$ – Ryan Carlyle Mar 7 '16 at 19:15
  • $\begingroup$ @RyanCarlyle FYI minor typo above, you say 200 steps/mm for Z but I think you mean steps/rev since you already state Z is 400 steps/mm. Thank you for accurate numbers though! $\endgroup$ – guru_florida Aug 22 at 15:12

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