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Messages - Tweakie.CNC

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4321
General Mach Discussion / Re: PWM signal not showing correctly
« on: September 03, 2012, 03:56:31 AM »
Hi Andre,

It's just a thought but are you able to adjust the laser intensity (set different current settings) from your GCode by using say S25 and S75 etc. ??

Tweakie.

4322
General Mach Discussion / Re: Decimal precision.
« on: September 01, 2012, 04:33:23 AM »
Thanks for your suggestion Larry.

I did actually resolve the issue by an extremely convolute process of recreating the .dxf from the GCode then recreating the toolpath to 3 decimal places.

There must be software, similar to Graham's Metric to Inch to Metric converter, which could do this task in a fraction of the time but I was unable to find anything suitable. Still, problem resolved now thanks again.  ;)

Tweakie.

4323
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: August 31, 2012, 12:53:08 PM »
Hi Jeff,

Thanks for the information, most interesting.

Tweakie.

4324
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: August 31, 2012, 08:11:57 AM »
Hi Jeff,

How does your laser vary it's output power when you input the analog 0 - 5 Volt input ??

Tweakie.

4325
General Mach Discussion / Re: PWM signal not showing correctly
« on: August 30, 2012, 11:56:06 AM »
Hi Andre,

My scope was set...

Y = 0.5 V/cm (10x Probe)
x = 0.5 mS/cm

(The PWM waveform is 5 Volt peak to peak with a pulse repetition frequency of 1 kHz).

Tweakie.

addition...   This post may be of interest to you http://www.machsupport.com/forum/index.php/topic,12444.msg155403.html#msg155403

4326
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: August 30, 2012, 11:41:01 AM »
Hi Jeff,

I have been following your progress on the Vectric forum with great interest - Very nice work you are producing.

Art's Mach3 Impact / Laser plugin does just as you describe, producing the shades of gray by a PWM method of varying the laser on time. This is OK for certain materials (such as wood) but many other materials just do not accept shade.
After many trials and comparisons I prefer the half-tone method but, as you have shown, each method has it's own merits.

Tweakie.

4327
General Mach Discussion / Re: PWM signal not showing correctly
« on: August 30, 2012, 08:11:14 AM »
Hi Andre,

I am pleased to hear that you are making progress.

Just out of curiosity I thought I would take a look at the Mach3 PWM waveform (the setup was with a maximum pulley speed of 100).

The following pics show a 25% PWM as produced with the S25 command and a 75% PWM with the S75 command.

Tweakie.

4328
G-Code, CAD, and CAM discussions / Re: Increment Spindle RPM per Cut
« on: August 30, 2012, 03:27:52 AM »
Hi Joel,

If you are controlling your spindle speed via the Mach PWM output then spindle speed is set by the S*** command and changing speed just needs the insertion of a different S*** commands within the GCode as required.

Tweakie.

4329
Hi Nigel,

If you haven't done so already you should perhaps check out Gearotic Motion http://www.gearotic.com/
Art and Bob have developed a pretty easy to use gear design software and method of use for helical as well a spur gears (active forum as well).

Just a thought.

Tweakie.

4330
Tangent Corner / Re: F1gur471v3ly 5p34k1ng?
« on: August 29, 2012, 11:50:12 AM »
Hi Dan,

I must admit that I first tried to interpret it in text speak (M8 for mate etc.) but it is just not that subtle. Interesting nonetheless.  :)

Tweakie.

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