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Messages - Tweakie.CNC

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1571
General Mach Discussion / Re: Jeff Woodcock
« on: February 22, 2019, 07:09:52 AM »
Thanks for posting John.

Jeff and I never really got on right from the start but I will miss his excellent pioneering diode laser work and his determination to succeed.

R.I.P Jeff, you will be missed.

Tweakie.

1572
General Mach Discussion / Re: Mach3 on Win7 32 bit BUT 64 bit processor
« on: February 22, 2019, 05:58:12 AM »
Quote
So I need an 32bit processor?....guess that is why I have  a Question mark in Device Manager next to Mach3 pulsing engine....

My thoughts exactly  :)

1573
General Mach Discussion / Re: moving hove from lower left to right.
« on: February 22, 2019, 03:13:13 AM »
The actual axis direction of movement is a very controversial subject because it usually relates to the position the operator stands in relation to the machine and is usually defined (at least within Mach) as the direction the tool moves relative to the workpiece.

That Haas diagram is also confusing because it appears to show the direction of axis movement which would be incorrect - in fact it shows the direction of tool movement in relation to the workpiece.

This pic from my machine shows the actual direction of axis movement.

1574
*****VIDEOS***** / Re: Cheap parts washer
« on: February 21, 2019, 10:39:44 AM »
Excellent  :)

1575
General Mach Discussion / Re: Laser 15W setup with 4axis USB board
« on: February 21, 2019, 05:01:18 AM »
Mach3 has a dedicated command set (M11P#/M10P# ) intended for laser switching and I have described its use here; http://hobbycncart.com/publ/cikkek/mach3_temaju_cikkek/switching_a_laser_under_mach_control/8-1-0-29

If you want to control laser output power then this post may be of interest; https://www.machsupport.com/forum/index.php?topic=12444.msg265104#msg265104

Hope this helps.

1576
General Mach Discussion / Re: Mach3 on Win7 32 bit BUT 64 bit processor
« on: February 19, 2019, 01:37:38 AM »
You will not be able to use the Parallel Port with a x64 processor even if the OS is 32 bit. I tried it with Win10 and caused a devastating crash.  ;D

1577
General Mach Discussion / Re: Hi, circles to big
« on: February 19, 2019, 01:34:08 AM »
Not sure this will cure the problem but...

With Mach3 you must not have the G90 and the G91.1 on the same line of code - they must be on separate lines.

1578
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: February 19, 2019, 01:29:26 AM »
Thanks for the info.  :)
I have now corrected the NAND outline in both schematics as your suggestion - thanks again.

1579
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: February 18, 2019, 02:43:21 AM »
Way back in 2014 I posted the simple solution I use for controlling my laser output power using the Mach3 generated PWM signal. https://www.machsupport.com/forum/index.php?topic=12444.msg194200#msg194200
That method, although just fine for me, is not suitable for lasers which use an Active High TTL input so an alternative was investigated.
Although it is a little more complicated because a 5 Volt power source is required, using a basic logic IC the Mach3 generated PWM can easily be gated ON / OFF using the M11 / M10 command set thus controlling laser output power.
I have attached schematics for both TTL(High) and TTL(Low) versions of the same concept.
By referring to the truth table you can see that condition C would be used for laser OFF with condition D used for laser ON (at the designated PWM) and condition F would be used with 100% PWM for full power laser output.

Food for thought perhaps ?

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