Thread: Help please Steps and control?
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28-03-2012 #1
Evening all, setvup the cnc tonight on half steps and all was going fine just a bit noisey, so decided to try 1/16th step but when i do this when i tell it to move 5mm it moves 30?
Now i got 200step motors at 16th so thats 3200 steps per rev?
5mm direct drive lead screw
3200/500= 640steps per mm which is what i have entered into motor tuning.
Is my maths correct or have i gone totaly off course? Cheers simon
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28-03-2012 #2
Yes thats correct but did you remember to click the Axis then save in motor tuning.???????????????
Probably stateing the obvious but when frustration sets in I know how easy it is to over look obvious things.!!! Have you Checked the figures you entered are there.??
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28-03-2012 #3
Haha yeh i Saved them, i know what you mean frustrated and frantically clicking. Also checked the units was in mm, scratching head continues, may have to be left on half step!
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Did you turn the driver off when you changed the switches? It may only read them at power up.
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28-03-2012 #5
I switched them off to change the steps on the dip switches and then switched them on again. I will try them again tomorrow when the computer is freshly booted up. I have a sneeking suspicion that the dip switches are labelled incorrectly as ivput 40 steps per mm in and it turned one rev when i told it to move 5mm which is correct, more investigation tomorrow.
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28-03-2012 #6
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28-03-2012 #7
Lets just hope it is as easy as that, time will tell tomorrow. Fingers crossed for me :) thankyou for youre help, will be straight back on here if i have no luck :(
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28-03-2012 #8
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28-03-2012 #9
Yeh good to know for future reference, and they are the system 4 drives from roy i believe, im pretty sure he has them spot on and cannot fault him in any way! I know i should have gone for some beefed up electronics but these will do for now to get my teeth into diy cnc....ing
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31-03-2012 #10
Sorted all done, the dip switches were different to what it says in the manual, running silky smooth now hah! At least it was simple :)
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