Calculating steps per mm
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I am trying to alter the steps per mm portion of the config file to finish setting up my core-xy printer, but could use some help. I noticed that x and y axis are defaulted to 80 steps per mm but I am not sure how this is calculated.
The pulley on the x and y axis is a GT2 pully with 40 teeth. The GT2 belt has 2mm pitch and with 40 teeth this means after a complete pulley rotation the belt will move 80mm. But how many steps per rotation? The stepper has 200 steps per rotation but does the calculation consider microstepping?
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You can give this one a shot too if you want to see the formulas behind the scenes.
https://docs.google.com/spreadsheets/d/1ts5fz73JQoQ4G0Z95nzfPDSS6HYEyczyZyccDZ5M6B4/edit?usp=sharing
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@feynman137 said in Calculating steps per mm:
@phaedrux @fcwilt Thanks guys just checked it out looks like I'm at 40xy steps per mm and 5mm traveled per rev. A bit confused as to what these terms mean..
Assuming it means that hot-end travels a 1mm diagonal line in the xy plane with 40 steps from both x and y steppers?
Not quite. It means it moves 1mm along X and 1mm along Y, resulting in (appx) 1.41mm along the diagonal.
Frederick