Statistics: Posted by Finhead — Thu Jul 17, 2014 11:40 pm
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Ok so how did i fix it by adding 3 jumpers below the step stick
so after sitzme suggesting it was a step rate problem i had done a little research and voila i found post mentioning the jumpers under the stepper driver boards.
all the tutorials i have read regarding ramps set ups i have never seen mention of these jumpers nor was the ramps board shipped with jumpers, very frustrating,
now how do i make the steeper step faster hahahahahahah do remove one jumper or adjust the firmware??????
thank you to all that help
Statistics: Posted by chemstar — Thu Jul 17, 2014 11:05 pm
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Statistics: Posted by chemstar — Thu Jul 17, 2014 10:13 pm
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Here are some details on the set up also my stepper is the 263oz stepper
Statistics: Posted by chemstar — Thu Jul 17, 2014 10:12 pm
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Statistics: Posted by Finhead — Thu Jul 17, 2014 11:00 am
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The stepper motors work by switching the field coils with transistors instead of a commutator. You can drive a stepper by manually connecting the wires and switching them in the correct sequence. Slow but it will turn. If you drive a stepper too fast the armature can't keep up with the field and it loses all torque and gets out of step. That usually has a sound that can vary from a growl to a squeel. The buzz you describe is fairly typical in my experience.
I would drop the step rates until you get consistent motion, then raise it until it fails. At that point back it down and do some testing to be sure that it will work under all loads and conditions for your machine.
Statistics: Posted by sitzme — Thu Jul 17, 2014 8:55 am
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what iv changed
Replaced nema 17 with nema 23
upgraded step stick to drv8825 (also tried other brands)
hard wired the power supply and stepper connections
used 3 different power supplies
tried marlin and sprinter
every time iv changed something i tried and still the same result, works fine with the ramps 1.4 firmware but when i try marlin or sprinter with creation workshop the stepper just buzzzes, what am i doing wrong?
Statistics: Posted by chemstar — Thu Jul 17, 2014 5:06 am
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i actually thought it was the power supply and so changed to another one but still the same
i will report back with results
Statistics: Posted by chemstar — Sat Jun 21, 2014 4:44 am
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