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Home Forum Hardware Computer Atom 330 or D525 or D510?

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TOPIC: Atom 330 or D525 or D510?

Re:Atom 330 or D525 or D510? 02 Июл 2012 19:08 #21506

  • gera229
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Anything guys?

Also what is the right software for me to use to convert accurate toolpaths as well as how do I tell the software which side of the line to offset my cuts to compensate for the bit diameter?
For example: If I have a .25" size milling bit and want to cut on the outside, I would move it out of the line by 0.125". But if I want to cut a circle, I would want to move it inside of the line by .125". But please guide me how this is done (is it done in the G-code generated where the g-code would be generated in a way that it is offset already or is it done in LinuxCNC itself after the g-code is already generated but does not have the tool offset built in)?

Aside from my previous posts:
I feel kind of guilty that I bought the unipolar hobbycnc board instead of a bipolar setup (which would cost just a bit more) because now I feel like I wouldn't be putting my 8-wire motors from hobbycnc to full potential.
I started to feel this way after learning of a Parallel setup which would win a unipolar set up in every way, if the max speed is the same.

Also I do not know why anyone would use a Series over Parallel with 8 wire motors.

Is a Half-Coil (unipolar) max speed the same as a Parallel (bipolar) setup or faster?
A Half-Coil setup torque is about 70% of a Parallel, not sure if that's too much of a difference, but it does not seem like it.

I have 305 in-oz steppers that would have otherwise been about 425 in-oz.

If there is any reason not to feel this way, let me know and list me any advantage I may have by using a unipolar setup.
Last Edit: 02 Июл 2012 19:20 by gera229.
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Re:Atom 330 or D525 or D510? 03 Июл 2012 01:03 #21516

  • Rick G
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But please guide me how this is done (is it done in the G-code generated where the g-code would be generated in a way that it is offset already or is it done in LinuxCNC itself after the g-code is already generated but does not have the tool offset built in)?
Take a look at G41 G42 linuxcnc.org/docs/html/gcode/gcode.html#sec:G41-G42
Often it is taken care of when the g code is generated, but if you are starting with a cad program and you know the size tool you will use you can apply your offsets there.

There may be gains in speed or torque when selecting parallel or series connections but you may also want to factor in the available power supply's voltage and amps to get the best combination.

But you may be getting a little off topic and want to post your questions as new posts in their categories to get the best possible results.

Rick G
Last Edit: 03 Июл 2012 01:07 by Rick G.
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Re:Atom 330 or D525 or D510? 03 Июл 2012 01:45 #21517

  • gera229
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While it is generated in the G-Code, how do we tell it how to generate it? Like how do we tell it which side of the line to cut on?

Also I do not understand the plane part in the link you posted. While the plane part is not about offsets, I am still curious to know.
XY, XZ, and YZ planes? It says you would get an error if the YZ plane is active. Why? I do not get that part and why others would work .

I just looked at the title all over again and definitely agree with you about posting a new thread with the proper title in the proper section.

Next time I come up with a question like that I will do as you said.
Last Edit: 03 Июл 2012 01:48 by gera229.
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Re:Atom 330 or D525 or D510? 03 Июл 2012 03:24 #21519

  • andypugh
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gera229 wrote:
One more thing, do I need to set my D525MW parallel port to EPP mode?
Only if you are using a Mesa 7i43, a Pico PPMC or (for rather random reasons) A gecko G540. The latter needs EPP because the charge-pump circuit is badly designed and some parports can source more current in EPP mode.
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Re:Atom 330 or D525 or D510? 03 Июл 2012 15:04 #21530

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What if I just do it anyway. Can I go wrong? Should I just do it?
Is it complex to do it?

I have a hobbycnc.com Pro chopper unipolar board.
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Re:Atom 330 or D525 or D510? 03 Июл 2012 15:11 #21531

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gera229 wrote:
What if I just do it anyway. Can I go wrong? Should I just do it?
Is it complex to do it?

It is probably a BIOS setting. You might as well allow it in the BIOS, but it is something specific drivers enable as and when required.
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