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Messages - Tweakie.CNC

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6991
Thys,

Run the 'DriverTest.exe' file in the Mach directory, if you have not already done so, this should check the drivers.

Check your parallel port cable with a multimeter to make certain that all pins are connected and that pin1 goes to pin1, pin2 to pin2 etc.

Tweakie.

6992
General Mach Discussion / Re: Asolutely dumbfounded guy!????
« on: May 09, 2011, 02:56:28 AM »
Hi Ben,

Welcome to the forum.
Just a couple of bits of info taken from the Gecko website.......


Your step pulse width must be at least 2uS wide and the pulse polarity for the step and direction signals are ACTIVE HIGH.

STEP 7: ADJUST TRIMPOT

The G540 is composed of four individual G250 motor controls, each of which has a trimpot on board to adjust low speed smoothness. In your CNC program set the axis being adjusted to move at 2 revolutions per second and use a non-conductive screwdriver to turn the trimpot in the ADJUST hole on the top of the drive. If you do not have a non-conductive screwdriver you may use a standard screwdriver, but be careful not to touch any components other than the trimpot. The trimpot has 270 degrees of motion and will have an audible “sweet spot” when it is in proper position. This position will change with each motor so be sure to readjust if you change motors.


Don't know if this helps,

Tweakie.

6993
You'r probably right Arnie, it's difficult to see from the picture.

Tweakie.

6994
Nice job Dave.

Was the figure vector pocket cut or did you do the whole thing as a raster ?

Tweakie.

6995
General Mach Discussion / Re: multiple sessions
« on: May 08, 2011, 01:58:41 AM »
Hi John,

The code you have there is the standard Vectric startup string. It is not all necessary for any particular machine it is just a general thing to cover almost all machines. It may be a good idea for you to look at the GCodes and MCodes (buttons of front page of Mach) to see what each item does and then decide if it is necessary for your machine.
Within Mach, go to General Logic Config page where you can enter an "Initialization String" to include any of the G or M codes you need.
Oh and don’t press stop to halt your program, use feed hold (space bar) – this brings the machine to a smooth halt without loosing steps.

Tweakie.

6996
General Mach Discussion / Re: nidet help
« on: May 07, 2011, 08:15:10 AM »
 ;D ;D You asked for that Hood  ;D ;D

Tweakie.

6997
Hi Stitos,

I think we are going round in circles on this and perhaps ending up just where we started.  ;D

Quote
The mode of operation of this plugin is through the pixels of an image? A pixel is a bit.
 1 bits white-----  laser ON
 1 bits black ------ laser OFF

This is not quite true because the images that we use have individual pixels which could be 1 bit but are more usually 8 bits per pixel. The plugin has to resolve each pixel into a stream of single bits (laser on/off) with relation to time (distance travelled).

Quote
The working speed has no effect?

This is not quite true because each single bit (laser on / off transition) is related to time and distance travelled so the working speed has a profound effect. Time x Distance = Speed.

You have already established that if you slow the speed down the laser does not fire.

And I tried it and it goes well, I see strange is that when I very low speed (30cm/min) will not turn on the laser. "Should be activated at any speed?

The dynamics of the plugin are related to laser characteristics which are :-  'more depth of cut at either higher power or lower speed' and 'less depth of cut at either lower power or higher speed'. Only Art knows exactly how his mathematical calculations achieved this but it is darn clever because it works.

With my use of the plugin I am only able to resolve 5 variations (3 shades of Gray plus Black and White) from any given 8 bit pixel, not sure exactly why this is but the end results are acceptable so I am happy.


Tweakie.



6998
General Mach Discussion / Re: nidet help
« on: May 07, 2011, 04:04:32 AM »
Perhaps your GCode contains a G20.

Tweakie.

6999
General Mach Discussion / Re: V carving using Mach 3
« on: May 06, 2011, 12:47:50 PM »
Hi,

Could you post your GCode file. If it runs OK here then that will at least rule out one possibility.

Tweakie.

7000
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: May 06, 2011, 10:47:10 AM »
Good news indeed, glad you got it sorted.  ;D

Tweakie.

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