Problem with the X axis

seems as though my suggestions are not appreciated on this section.

maybe i missed it, IS THIS ONLY AN ADMINISTRATOR HELP SECTION??

which brings me to another question that needs to be answered.

THESE PRINTERS ARE NOT FULLY CALIBRATED WHEN PACKAGED UP AND SHIPPED. IF THEY WERE WE WOULD NOT BE SEEING UNLEVEL BEDS OR ISSUES LIKE MICHEALS. IF A MACHINE WAS FULLY CALIBRATED BEFORE SHIPMENT AND TESTED WE WOULD NOT BE SEEING PROBLEMS THAT HE IS HAVING.

These printers are more pre-assembled /pre-configured printers. NOT FULLY ASSEMBLED AND CALIBRATED as stated in the kickstarter campaign.

 

micheal what part of the East coast, i'm in Florida?

 

Cambo - I'm in NC. And your suggestion about swapping the cables makes perfect sense to tell if it's the motor or the board.

Jeff - I'll check the temps after caffeine this morning. Not really awake yet.

 

Printed is right,
you'll only want to make small moves ( manually moving the axis by rephost host buttons 10mm at a time) once you swap cables and make sure they are plugged in correctly. Dont use the home all button.

If the gripe followed, you'll notice it on the first move.
if not the axis will move 10mm and stop.

Swap the cables back, and swap x and y stepper drivers. if the grip followed here your y-axis will studder/not work and your x axis will work as normal.. good luck.

 

Ok!

I didn't end up working on this yesterday, but I just did some testing.

Thanks to everyone above to make sure I didn't make anything worse.

I'm a layman at 3d printing, but from what people are saying it looks like a bad stepper motor. I swapped the plug from the X and Y axis (flipping it 180, as described in the wiring assembly video), and when I tried to move the Y, the X axis still freaked out. Z still moves perfectly normally.

(And I have video uploading of the testing today..... will edit it and post link.)

EDIT: Edited to add - I didn't notice any heat buildup on the X stepper motor. After testing it was still cool to the touch, but I didn't have it on for long.

 

New video of issues, as mentioned in last post:

 

okay well, that narrows it down. When you had the x and y swapped did the Physical y axis (with it swapped you would be clicking on the x axis to move the y axis) work as normal also? because that would tell me if the driver for the x axis is working also.

If you have a multimeter you can read out the coils on the suspected bad stepper motor via the connector, let me see if i can find the specs on the stepper motor.(robo guys would probably have this)

in the mean time you can check to see if any of the wires to the x axis stepper motor are damaged causing any type of shorts. and/or check wiring soldering connections to see if it may have been accidentally soldered wrong.

 

I didn't plug the wires for the Y axis into the X section of the board.... but I can and give that a shot.

And I think I have a multimeter around here somewhere...... but that may take a while to find.

 

Ok. With the Y stepper plugged into the X axis spot on the board, I hit the control for moving the X axis and the tray moves back and forth just fine. No problems there.

I'll look for the multimeter.

 

Well, that means your x driver is working fine and its most likely a bad stepper or bad wiring to the stepper.
I found the specs on the motors. here they are. part number Dw42hs40-1704

http://www.dewochina.com/product-54.html


the chart above says each phase or each coil should be reading 2 ohms for this stepper motor.

In this photo below with the 4 leads. take your meter set it on ohms, and read between blk and grn, it should read 2ohms. then read between red and blu, it should read 2 ohms. (Note: they may have used different color wire extensions, so be aware of that and read whatever is connected to those colors.) the colors shown are directly attached to the stepper.



but im willing to bet you have a bad stepper motor. contact robo team directly and link this post. If they havent' already seen it.

 

Thanks Cambo. I'll try checking that as soon as I find the multimeter. I moved last year, and it's probably in a box somewhere in the garage.

Fortunately for me I jumped on the Kickstarter early while they still have the "get 2 printers for $x" goal, and the Robo team said they would honor that even though they had to pull that option off Kickstarter. So I got 2. The 1st one showed up on Friday, and that's the one that has the X axis problem. The 2nd one showed up Saturday, and that one is working great.

I mention this because I'm uploading videos of the second one (working) to YouTube so people can see it, and I didn't want to confuse people or make them think printer #1 was miraculously fixed.

 

well at least you got one printer that works..

 

Ok, I found a crappy multimeter that I have. I'll see if I can figure out how to check the ohms.

Out of curiosity, how to I tell what is coming off the board after the trim pot adjustment? I want to make sure it's right, or that I set it back to what is right.

And Harry/team: What do I do about getting a replacement stepper/wiring?

 

Messages sent to both.