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y motors move faster the the y motors

Posted by hichamom

hichamom

y motors move faster the the y motors
May 24, 2018 10:39AM

Registered: 5 years ago
Posts: 22

hi guys i hope you doing great i have a problem with the motors speed ..... the y axis move faster the the x axis
i give them the same speed ....i tried to swap the driver and the jumpers and still the same problem

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Trakyan

Re: y motors move faster the the y motors
May 24, 2018 07:31PM

Registered: 7 years ago
Posts: 507

The accelerations are probably set differently, although it's usually the Y axis with a lower acceleration not the X. That or different pulley diameters causing different linear travel speeds for the same RPM. What problem is this causing?

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hichamom

Re: y motors move faster the the y motors
May 24, 2018 08:17PM

Registered: 5 years ago
Posts: 22

Quote
Trakyan
The accelerations are probably set differently, although it's usually the Y axis with a lower acceleration not the X. That or different pulley diameters causing different linear travel speeds for the same RPM. What problem is this causing?

First thanks for the reply Trakyan
I use the same pulley size and the acceleration is the default one I didn't change it at all I don't know what's going on

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o_lampe

Re: y motors move faster the the y motors
May 25, 2018 01:56AM

Registered: 8 years ago
Posts: 5,232

Maybe the microstep jumpers aren't registered from the controller? Bad contact or cold solder/cracked PCB traces?
What if you swap XY-stepper connectors? Or use E0 and Z-ports for a change.

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Trakyan

Re: y motors move faster the the y motors
May 25, 2018 06:35PM

Registered: 7 years ago
Posts: 507

The default accelerations are usually different, especially on an i3. Is this causing print problems or just an observation?

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hichamom

Re: y motors move faster the the y motors
May 25, 2018 11:07PM

Registered: 5 years ago
Posts: 22

Quote
Trakyan
The default accelerations are usually different, especially on an i3. Is this causing print problems or just an observation?

i didn't print any thing yet but when i tried to set home to the x stepper its works fine but for the y stepper it didn't work till i lower the speed and the federate a lot

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hichamom

Re: y motors move faster the the y motors
May 25, 2018 11:14PM

Registered: 5 years ago
Posts: 22

Quote
o_lampe
Maybe the microstep jumpers aren't registered from the controller? Bad contact or cold solder/cracked PCB traces?
What if you swap XY-stepper connectors? Or use E0 and Z-ports for a change.

yes o_lampe i tried to swap the x y connectors and the same problem
iam thinking to use the e1 ports as the y but i don't know how
i have an other ramps board but iam afraid to use it because with that board i shorted an old arduino mega would it be okay to use that board or no
what id i remove the diode ?

400px-Rapms_front.JPG

thanks a lot for your help guys

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Trakyan

Re: y motors move faster the the y motors
May 25, 2018 11:16PM

Registered: 7 years ago
Posts: 507

Check to see if movement on your y axis is smooth and the rails aren't binding or have excess friction, that could be a problem.

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hichamom

Re: y motors move faster the the y motors
May 25, 2018 11:23PM

Registered: 5 years ago
Posts: 22

Quote
Trakyan
Check to see if movement on your y axis is smooth and the rails aren't binding or have excess friction, that could be a problem.

all things are good
how i can use the e1 port for the y stepper would that be possible ?
+ i have an old ramps board ... i shorted it and the old arduino gone ..would be it safe to use it again with the arduino and test if there is a problem with the PCB