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Messages - Tweakie.CNC

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871
General Mach Discussion / Re: Plasma ignition and stop lag problem
« on: July 06, 2019, 05:42:07 AM »
The M3 / M5 command set have an inherent delay. To overcome this issue the M11Px / M10Px command set was introduced, initially for Laser control but it is now commonly used with Plasma (it only switches the output pin (Output#) at the instant of axis movement). There are a few more details here; http://hobbycncart.com/publ/cikkek/mach3_temaju_cikkek/switching_a_laser_under_mach_control/8-1-0-29


Assuming you are using the PC’s LPT Parallel Port or a motion controller that supports the M11/M10 command set then…
If you determine which Output# you are using to switch your torch ON / OFF then you can replace all M3 commands with M11Px and M4 commands with M10Px (where x = the Output# mentioned earlier).

Tweakie.

872
Tangent Corner / Celebrations.
« on: July 04, 2019, 05:06:40 AM »
Happy 4th. Guys & Gals   ;)


873
General Mach Discussion / Re: The old find no XHC NcUsbpod Trouble
« on: July 04, 2019, 01:11:03 AM »
Hi Kev,

Yours is a story we have heard so many times before. Sometimes the cheap Chinese controllers work and some times they just don't.

Rather than waste more time and effort I think you should go for a US or European manufactured controller and choose Ethernet not USB.

There are a number of different controllers to choose from - I use an ESS from Warp9 (which has excellent documentation and manufacturers support) but perhaps check them all out before making a decision.

Tweakie.

874
General Mach Discussion / Re: m11 and m10 commands
« on: July 03, 2019, 03:20:55 AM »
Hi Tweakie
This link is no longer available, http://www.cooperman.talktalk.net/files/27_files/Page1020.htm

have you reposted it?

Thanks,
Chuck

Hi Chuck,

The re-post is here;  http://www.tweakie.byethost10.com/27_files/Page1020.htm

Tweakie.

875
Quote
However, I've been looking everywhere to see if it'd be possible to send a PWM signal over the parallel port, from a Geckodrive G540 to a PC, as input that Mach3 would recognize (maybe a 50% signal does something, while a 75% does something else).

That would not be possible.

Mach3 can generate a variable PWM signal (based on the S word in the Gcode) which could then be sent via the Parallel Port to the Gecko G540.

Quote
We're building a machine that needs an input to the computer to tell it to either reverse feed, continue forward, or stay stationary

Sounds like an ideal job for Mach3 or Mach4 but we would need some more detail of what you are intending to achieve.

Tweakie.

876
General Mach Discussion / Re: UC300
« on: June 26, 2019, 09:57:32 AM »
Perhaps check out the uccnc website, they describe the differences quite well. https://www.cncdrive.com/products.html

Tweakie.

877
Mach4 Plugins / MOVED: Mach4 5 Axis RTCP
« on: June 24, 2019, 04:12:08 AM »

878
General Mach Discussion / Re: Using Mach for Laser and Sherline
« on: June 19, 2019, 07:43:03 PM »
Mach3 has Scale DRO's (1.0000 = full size, 0.5000 = half size, etc.) so at run-time you can check the size (also indicated by the Program Limits in the Tool Path window) and adjust or scale the work as necessary.

You could perhaps connect a LED (current limited to <8mA) to an output pin and switch that ON/OFF in line with the Mach3 M11P1/M10P1 command set. The Vectric laser post processor will produce the appropriate Gcode; https://www.machsupport.com/forum/index.php?topic=36639.0

Tweakie.

880
General Mach Discussion / Re: Using Mach for Laser and Sherline
« on: June 19, 2019, 01:57:23 AM »
Hi Acdii,

I think the Vectric Cut2D would be a good choice of CAD/CAM software (as are all the Vectric products).

Mach3 or Mach4 would be a good choice for controlling your Sherline and if you search the forum you will find many examples of others who have converted and successfully used their Sherline mills for producing model components.

I think your new laser machine would be best left controlled with it’s DSP controller. These use HPGL code rather than Gcode and CorelDraw is probably the last stronghold for the HPGL so it generally has to be used in preference.

I use Mach3 (and sometimes Mach4) for controlling my Milling machine, my Router machine and my Laser machine. You can read more about my laser in this thread; https://www.machsupport.com/forum/index.php?topic=12444.210
(The thread is now too long so perhaps just scroll through looking at the images and if there is anything of interest stop to read).

Tweakie.

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