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Offline Bill_O

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s curve
« on: November 01, 2010, 12:10:36 PM »
I have a very heavy gantry machine and after consulting with the servo experts they recommend that I use a controller that has s curve accel and decel. I am using brains and macros for a lot of custom options on this machine.
I do not think Quantum will let me use brains and do not know about macros and the custom screen sets I have.
Will s curve be included in the next mach?
How about external control boards?
All help greatly appreciated.

Bill

Offline Tweakie.CNC

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Re: s curve
« Reply #1 on: November 01, 2010, 12:24:43 PM »
Bill,

Have you read all the stuff on the Tempest Trajectory Planner, adjustable 'Jerk' etc. ?

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.

Offline Bill_O

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Re: s curve
« Reply #2 on: November 01, 2010, 12:32:42 PM »
I am reading it now. I might be willing to give it a try. This is a huge machine that I need high accel and decel on. Have you used Tempest? Is it something I can just add to the Mach or what?
Bill

Offline Tweakie.CNC

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Re: s curve
« Reply #3 on: November 01, 2010, 01:57:48 PM »
Bill,

It can just be added and selected, or not, on startup (full instructions in thread).

I must admit that I don't understand all the in's and out's but it certainly seems a lot better with 3D (.stl) files.

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.

Offline ger21

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Re: s curve
« Reply #4 on: November 01, 2010, 04:29:20 PM »
Tempest works awesome for 2D stuff, too. You can set it to get CV on tangent lines and no rounded corners. However, you can't use the Pause or FRO with it. Probably some other stuff as well. I really wish it was a permanent option.
Gerry

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http://www.thecncwoodworker.com/2010.html

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Re: s curve
« Reply #5 on: November 02, 2010, 01:00:04 AM »
+1 on making it a permanent addition to mach3.

Mike
We never have the time or money to do it right the first time, but we somehow manage to do it twice and then spend the money to get it right.