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Messages - Glenn

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81
General Mach Discussion / Re: getting started cnc
« on: July 01, 2007, 08:52:56 PM »
Hi Todd,
   You don't need any books! You already have what you need right on the computer!
I'm like you; I make many of the same thing over and over on a lathe.
   I just read all of Arts tutorials and watched all of his videos, and they are great!
I watched these videos over until It slowly sunk in what just went on with CNC lathing.
   A few things to remember: Don't use a laptop. some work, most won't run smooth.
Just use a dell windows2k or xp. with the printer port, this will solve alot of early questions and problem solving.
   It took me awhile to get the grasp of it, but I eventually got the hang of it, and so will you!
                   Good Luck
                    Glenn

82
Competitions / Re: ******Guess and win a G100 Grex******
« on: May 22, 2007, 09:39:39 AM »
Thanks for the hint, Brett!

    2,700,077

        Glenn

83
General Mach Discussion / Re: 40000 steps per
« on: April 29, 2007, 08:01:08 PM »
Thanks Brett- and Chip!
   It sounds like you're on the right track on this one too!
 
 Brett, before, when I would slow them down to see if it would
run, I would go as slow as 10-12 IPM's. Not slow enough, they faulted, so  I went all the way down to 3 IPM's
as per your great advice, and viola, that bad boy runs now without any faults at all. YES!
  I increased 1 IPM until it got to 7 IPM'S without faulting.Neat, but too slow for real
productivity.  We're on the right track.

   Chip,
Yes, this sounds like  what I need.  Are you saying that in some set-ups, it would be possible
to only send 4,000 pulses to the g201, instead of 40,000 (which is my  current system)? And still
travel an inch for an inch?
  That would be the solution I seek.
I've looked over the g901's literature, and if I have read it right,(please correct me if I'm wrong),  it would allow my computer to send
1/10th the pulses to the g201's and still be inch for inch correct?
  OR, do you think that the g201 can be adjusted to stop making 10 micro steps? Unclear on that one.   

  The leadscrew turns per inch are 20 to 1, .05" pitch x200 steps per rev= 4,000.

  Thanks,

   Glenn



84
General Mach Discussion / Re: Retiring.
« on: April 24, 2007, 07:44:30 AM »
Benny,
  Good luck in the future!  The forum is the BEST!
Made by the BEST!
  Thanks!

   Glenn

  I'll miss your interesting conversations w/ the others here.
 Quite a nice collection of smart people you've drawn!

85
General Mach Discussion / 40000 steps per
« on: April 24, 2007, 07:31:42 AM »
Hi guys,
  In motor tuning, is it unusual to run 40,000' steps per'  to get the
inches to be exact on a linear movement?  And can this high number keep
me from getting really fast IPM's? My motors won't run very far before they squeal
and lose their place.
  Is this a situation where some of you choose to use sprockets to turn the motor half as
fast as the screw you're turning?

  Thanks,

  Glenn

86
General Mach Discussion / Re: 5vdc power supply
« on: March 31, 2007, 09:28:04 PM »
Just a note to let you know that sometimes aren't as they seem..

It wasn't a grounding problem,but rather the breakout board (thanks Brian),the pins all check out with a continuity tester, but still the signals got all twisted before reaching the geckos.

 Now the pinout is: 2+3+7 (step,direction,common) x axis
                    and  16+5+8(step,direction,common) z axis!

It works! I still don't know why, but I am not changing it.

Thanks to all you guys,Markkl,Brian, Hood and Brett!

Glenn :)

87
General Mach Discussion / Re: 5vdc power supply
« on: March 31, 2007, 03:18:33 PM »
Markkl,

 Thanks for the much needed guidance!
I will attempt these connections and see if she floats!

Cheers!
Glenn

88
General Mach Discussion / Re: 5vdc power supply
« on: March 31, 2007, 09:58:26 AM »
Hey Markkl,

Now I'll show you my ignorance,  ;D could you please tell me where the PC ground is?

I'm being cautious to prevent ANY chance of ruining my components.

Thanks,

Glenn

89
General Mach Discussion / Re: 5vdc power supply
« on: March 30, 2007, 10:07:34 PM »
Hi Brian,

I use a cnc DB25 breakout board for stepper motor drivers.

It uses only the first 17 pins as normal and the 18th pin is ground. By the way,

should I be using that ground pin?..It is unused right now.

I only use pins:  2+3+7(step,direction,common) x axis

                       4+5+8(step, direction,common)z axis

Thanks,

Glenn

90
General Mach Discussion / 5vdc power supply
« on: March 30, 2007, 03:37:28 PM »
Hi all,

I got a 5vdc psu to run my gecko 201's, step and direction signals, but unsure where to connect them up at.

I believe the positive goes on the common screw terminal, but, where would I connect the ground contact?

I have had the mach 3 run one axis ok, but the other one on my lathe seems to need motion from the other
 
axis (some weird voltage- sharing happening,maybe) to complete the step-direction circuit before it will move.

I thought the step and direction would run off of the 5vdc coming out of the printer port, but I just can't make this happen! :-[

Any suggestions would really improve the current situation I'm in!

Thanks,

Glenn

P.S.  I'm using a 35vdc psu unit to run 2 steppers..seems like plenty of power on that end of the issue.

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