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Author Topic: Hobby cnc board work with 127 oz steppers and not with 200 oz steppers  (Read 3832 times)

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Haai
I have the hobby cnc pro driver board and 200 oz 3A steppers when turning the bord on and telling the steppers to move with mach 3 the stepers bind for 1/2 a second and then I can turn the steppers with my hand but dont turn at all

I connected my foamcutter steppers (127 oz 1 A) to the same board and they work fine

Dave Rigotti (hobbycnc.com) thinks it might be some setting in mach 3 that I got wrong

Please help

Thanx

Johann Badenhorst

Offline Graham Waterworth

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Re: Hobby cnc board work with 127 oz steppers and not with 200 oz steppers
« Reply #1 on: January 05, 2007, 10:50:44 AM »
Have you set the acceleration and velocity under motor tuning.

Graham.
Without engineers the world stops
Re: Hobby cnc board work with 127 oz steppers and not with 200 oz steppers
« Reply #2 on: January 06, 2007, 04:09:48 AM »
yes it is set to     
                        X axis                Y Axis                  Z axis
steps per mm -   2130                  2130                    2130
velocity          -   300                    300                     200
acceleration    -   100                    100                     100
step pulse      -    5                         5                        5
dir pulse         -    5                         5                        5

if not correct please tel me wat it should be

other settings:
Driver bord is set to 1/16 steps
and as I said the smaller 127 oz 1A steppers work great

Graham
Will you please send me your settings for mach3 so that i can just get jhe motors running and I can then later set it for my router


Thanx

Johann Badenhorst

Offline Graham Waterworth

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Re: Hobby cnc board work with 127 oz steppers and not with 200 oz steppers
« Reply #3 on: January 06, 2007, 05:00:34 AM »
Hi Johann,

every set up is different and you have to set each motor to its optimum by playing around with the setting until you get it running nice.

My settings are :-

                        X axis                Y Axis                   Z axis
steps per mm -     800                     800                     880
velocity          -   1750                   1750                    2250
acceleration    -      55                       65                       50
step pulse      -        1                         1                        1
dir pulse         -        1                         1                        1

Try them but there is no guarantee they will work for your set up.

Graham.

Without engineers the world stops