Possible solutions for motors do not move

marklinoz
Posts: 7
Joined: Sun Oct 14, 2018 11:58 am

Re: Possible solutions for motors do not move

Post by marklinoz » Sun Oct 14, 2018 12:07 pm

I have a similar problem
My Z axis that is up and down, will ONLY go up, home icon only makes it go up further, down button does nothing
My X axis will go left and right no problem, it will also home properly
The Y axis and the heat bed will only go forwards , not backwards to the motor in the rear
I am using the Prusia I3 Pro
When I try a print job in either in Eaysprint 3D or Cura, both extruder and bed reach the required temperature.
It can not go down to the heat bed so it prints in the air, 3/4 of the way up the threaded shaft.
We run on 220v 50HZ, there is 12 Volts coming out of the PSU.
Heat bed does light up.
On Boot up the LCD display sometimes flickers

marklinoz
Posts: 7
Joined: Sun Oct 14, 2018 11:58 am

Re: Possible solutions for motors do not move

Post by marklinoz » Sun Oct 21, 2018 7:43 pm

Thank you I can now get the X Y Z axis to work.
To print ANYTHING I have to have the extruder head at least 1-2 mm BELOW the level of the glass, and then hold the leading edge of the glass DOWN, so the extruder does not CRASH in to the plate glass, when starting to print.
I can ONLY GET AN ALMOST PERFECT GHOST IMAGE ON THE GLASS, this is wiped of with a sponge.
The bed is at maximum extension, this is the only way I can get it to do anything.
Having the bed lower, means the extruder is 1-2 mm below the glass level.
If I have it LEVEL with the glass plate it ALWAYS print 2- 3 mm above the plate.
I have also noticed when I plug the USB cable into the computer, the Extruder LCD blanks 2 to 3 times before it connects.
I am using CURA 3.50
I hope you can help me solve this mystery??

Rogeralcon
Posts: 5
Joined: Sun Dec 02, 2018 10:00 am

Re: Possible solutions for motors do not move

Post by Rogeralcon » Sun Dec 09, 2018 1:22 pm

William wrote:
Thu Nov 16, 2017 9:21 am
The voltage of A4988 is 0.8-1.2v in normal.You should ensure the voltage adjust to 0.8-1.2v.You can refer to it:
http://www.geeetech.com/forum/viewtopic ... 17&t=17038
my extrusion motor is very hot, I will be checking the voltage, good idea.

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