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Messages - rhtuttle

551
Finished Plugins for Download / Re: Huanyang VFD controller plugin
« on: May 02, 2011, 01:20:41 PM »
Majorstrain, thanks for posting the pictures.  I just got my cheap VFD today and even though I know nothing about electronics I was able to tell that my 485 chip is missing from all of the info posted here.

would this chip work?
  http://www.wvshare.com/product/MAX485CSA.html

There is nothing in the CN4 holes.  What is supposed to be there?  Do I need it?

PC1 and PC2 have nothing soldered to them.  Is there supposed to be something there?  Do I need them

TIA

RT

552
Finished Plugins for Download / Re: Huanyang VFD controller plugin
« on: April 26, 2011, 05:44:02 PM »
I ordered one of these last week.  First off, let me say that I am electronically challenged.  The Ebay site said that the VFD was modbus compliant.  Does anyone know if they have fixed this or if they just mean that you can communicate over the RS45? 

It sounds as if these are pretty hastily put together and I might be spending a lot of time seeking help.  I have read most of this thread and some of the other ones on cheap chinese spindles but it is all I can justify spending on an already too expensive hobby.

Hope I don't have to bug you guys too much.

553
General Mach Discussion / Re: 4th axis setup cheat sheet
« on: January 11, 2011, 06:21:44 PM »
Trying to get my head wrapped around this subject (pun intended) and I understand the steps/degree.  If I have a 60:1 gear ratio and a 10 micro step on a 1.8 degree stepper that would be 333.333333 / degree.  Now, what is a reasonable velocity to enter?  With that gearing, if I wanted to limit my stepper RPMs to 500 ( at this velocity there would be no load so no torque problems ), I would get 8.333 revs/min so I would enter a velocity of 3000.  Is that the way to calculate it?

TIA

RT

554
General Mach Discussion / Re: 4th axis - GCode degrees vs distance
« on: March 09, 2010, 02:09:03 PM »
Thanks to all that have responded.  Now I am more throughly confused than ever ;)

PointCloud,  'Why would you want do do that!!!'  Probably because I don't know what I am doing.

Query.  I have a tube that I wish to do the following.  Put a logo on with a diamond drag point that was drawn with a Vectric product and assumes a linear relationship.  I want the logo to remain proportional regardless of the tube size. Then continue with adding a geometric design (e.g. greek key) to the circumference which is defined in radial terms so that regardless of size there are always the same number of repititions on the circumference.

It seems as though I will have to change profiles to accomplish this kind of task and I have no problem with that.  I just was trying to find out what the limitations are in Mach.  Love the program.  Love the help you guys give.  Hopefully I will have my A-axis put togehter in the next few months and then I will have a whole slew of new questions for  everyone.

Thanks,

RT

555
General Mach Discussion / Re: 4th axis - GCode degrees vs distance
« on: March 02, 2010, 02:44:09 PM »
Thanks for the reply.  I do use separate profiles, but to my knowledge there is no way of changing them without having to shut mach down and reload.  Which means that you have to re-reference.

I have an app that generates the code, loads it into Mach and runs it using the Mach interfaces available.  If it is possible to switch from angular to linear programmatically then I would prefer to do that when possible.

556
General Mach Discussion / Re: 4th axis - GCode degrees vs distance
« on: March 02, 2010, 12:31:04 PM »
Since the A-axis rotates I assumed that the box had to be checked.  (sound of hand slapping forehead) DOH!

Can you query and configure on the fly (VB,Button or Interface) whether the axis is rotational?

RT

557
General Mach Discussion / 4th axis - GCode degrees vs distance
« on: March 02, 2010, 11:59:07 AM »
I have never looked into a 4th rotating axis until lately and have some real basic questions.  I have read several of the posts here but seem to be getting more confused rather than less. 

1. Can anyone point me to some literature that explains coding concepts for an A-axis?

2. If I use a 10/1 reduced drive for the axis with 1.8 degree stepper and 10 microstepping I would use 20000/360 for steps per revolution, correct?

3. Do you express the A distance in degrees, circumference distance, or, can you do either?

4. Code example for: 1" diameter stock that you want to spiral at a 45 degrees ( move x 3.1416 inches and rotate A 360 degrees) like screw cutting.

5. Code example for: 1" diameter stock that you want to rotate A-axis 0.2 inches on the surface, do a sub routine to cut along the X-axis, then rotate A 0.3 inches.

If you can provide insight on any of the above it would be very much appreciated.

TIA

RT


558
Feature Requests / Re: Easy G-Code Scaling
« on: April 26, 2009, 08:47:54 AM »
entering a negative number in the scale reverses the image.  Except for arcs.

559
Would like to programmatically set Mach to a jog feed override mode (not sure if this is the right terminology).  ie Hold the shift key down and then jog so that you are in a rapid jog when you hit one of the arrow buttons.

example: jog x positive in continuous mode in rapid mode.  I have tried:

doOEMButton(204)                            // Jog mode Continuous
doOEMButton(202)                            // Feed override Jog
doOEMButton(307) or jogOn(0,0)        // Jog X-axis positive

The 202 has no effect, is there another command to put Mach into the jog override and one to take it out?

560
Others / Re: New Mach User Interface - MachMe - Beta
« on: April 16, 2009, 11:45:50 PM »
Thats significant.  I want MachMe to work with Mach settings not force alternate behavior.  I will see if I can use a different approach when jogging.  I use a Contour Pro pendant and that is passed through to mach.  Do you have a pendant and does it still work as expected when MachMe has focus?