G code not running smoothly

LordFrz
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Re: G code not running smoothly

Post by LordFrz » Wed Nov 21, 2012 6:50 am

Its at 2.5mA while at 24v

fito
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Re: G code not running smoothly

Post by fito » Wed Nov 21, 2012 7:42 pm

I hope you mean amps not Julianna. And 2.5 Amps sound a little on the low side.
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ShapeOko 649

LordFrz
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Re: G code not running smoothly

Post by LordFrz » Wed Nov 21, 2012 11:48 pm

The datasheet for the power supply says 1.5A at 24V
http://www.mamacsys.com/pdf/ps-200-data-sheet.pdf

Im getting 2.5 mili Amps from my multimeter at 24v

Ill try another power supply and see if that does anything.

What Im not understanding is that when I run the (Test Firmware for Azteeg X1 and Saguinololu 1.3)
All my stepper motors turn forward and backwards just fine, like the code tells it to. It is not untill I try and
send it Gcode that It starts to act funny.

edwardrford
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Re: G code not running smoothly

Post by edwardrford » Thu Nov 22, 2012 12:01 am

This may be because of how quickly the gcode is being sent compared to just typing in coordinates? That's just a guess.

I'm still wondering if it is more of an interference inssue. Where the handshaking gets messed up and each one (gcodesender and grbl) is waiting for the other because the OK was lost?

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T4b
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Re: G code not running smoothly

Post by T4b » Fri Nov 23, 2012 5:58 am

LordFrz wrote:The datasheet for the power supply says 1.5A at 24V
cvoinescu wrote that according to the datasheet of the motors which is linked on the first page of the thread, each single motor needs a little more or less than 1A depending on how you wire them. So your power supply should be at least about 3A, 4A if you want to keep the possibility to add dual-Y.
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cvoinescu
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Re: G code not running smoothly

Post by cvoinescu » Fri Nov 23, 2012 2:22 pm

Due to the fact that the drivers work as choppers, you probably need something like 0.8 A per motor regardless of how it's wired (less if the current adjustment is turned down). Still, 1.5 A is probably too little.
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jc21
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Re: G code not running smoothly

Post by jc21 » Sat Nov 24, 2012 9:31 pm

I'm using the same motors, Y and Z axis runs smoothly, but X no. When i print helloword_shapeoko.txt does these (pic) (JUST A LINE!!)
Attachments
12.jpg
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LordFrz
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Re: G code not running smoothly

Post by LordFrz » Sat Nov 24, 2012 9:42 pm

Ill try a new power supply with more Amps. The weird thing is that if I put the stepper driver of the Y axis in backwards, then the X axis works just fine. (Did not do it on purpose, just a mistake.) Thanks for everyone help, I'll see about a new power supply.

LordFrz
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Re: G code not running smoothly

Post by LordFrz » Fri Dec 14, 2012 3:23 am

I have tried 3 diferant power supplies and still getting the same problems. I am uploading a video to youtubes that shows what is happening, it should be available in a few hours. http://youtu.be/wW5_j-Kw_3M

It is less than 5min showing that test code will run stepper motors back and forth, but that the gcode sender will only work if the Y-Axis stepper controller is in backwards.

Archangel
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Re: G code not running smoothly

Post by Archangel » Fri Dec 14, 2012 1:45 pm

when you say Y controller in backwards, do you mean flipping the molex plug upside down?
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