Messages

1111

General Mach Discussion / Re: Gantry Router

« on: June 13, 2013, 09:01:57 AM »

Where do I change my step signals to low, in ports and pins? Should I just change the offending axis to low, or all of them?

Yup, motor outputs.  You could change it on just the one for a test but I think they should all be set to active low for those drives.

Brett

1112

General Mach Discussion / Re: Gantry Router

« on: June 13, 2013, 08:16:22 AM »

Have you tried changing you step signals to active low?

Brett

1113

Show"N"Tell ( Your Machines) / Re: Many many inputs

« on: June 13, 2013, 08:10:55 AM »

I like pmdx 122's.  Have a look at their docs on PMDXs site. You can set pins 2-9 as inputs.  There small and with the right stand offs you could stack them up. I ran my MPG straight to the SS though, port 3.  This gives me no optical isolation on those inputs though.  I can't remember all the details of why but the inputs I used for the MPG had to be normal inputs, not outputs selected as inputs (2-9).

Brett

1114

Show"N"Tell ( Your Machines) / Re: How I solved my Stepper Motor Resonance Problem - Video

« on: June 13, 2013, 07:03:16 AM »

Good Job Chris!   

Brett

1115

General Mach Discussion / Re: FEEDRATE 10% INCREASE/DECREASE CHANGE VALUE

« on: June 12, 2013, 05:44:24 PM »

Push your tab key if your running the default screen set and a mpg page will pop out.  Enter your slow jog percentage there and push the tab key again and the MPG page will hide again.

Brett

1116

General Mach Discussion / Re: Can't get 2.2KW spindle to work

« on: June 12, 2013, 04:13:51 PM »

 

Brett

1117

Show"N"Tell ( What you have made with your CNC machine.) / Re: I'm in Hog Heaven

« on: June 12, 2013, 09:42:07 AM »

What a trooper! 

Brett

1118

Tangent Corner / Re: Pyrography.

« on: June 11, 2013, 01:24:09 PM »

And I thought I was doing something when I filtered a thermocouple's signal in an Arduino to get a stable reading.   Lots of number crunching going on to pull off what he is doing.......... very nice.  I probably couldn't fit some of the formulas from my shoulder to my finger tips........... because that is where I write down the important stuff.  Yup, over my head and longer than my arm.  If I hadn't got all of our social security numbers tattoed on a few years ago I might still have a shot but I got tired of writing those every few days.  Now I don't have to worry about that but it did make my work area considerable shorter.  The trade off was worth it though I think.  I don't have to spend nearly as much time giving everyone the next to the last 2 digits. I don't know why they need them anyways...... I think they use them to give to their bill collectors because I get all kinds of duns from folks I never herd tell of.  

Brett

1119

General Mach Discussion / Re: Newbies Need Help!!!

« on: June 11, 2013, 01:02:45 PM »

I have sent you a PM.

Brett

1120

General Mach Discussion / Re: Gcode motors stall but can jog at higher speed

« on: June 11, 2013, 12:30:09 PM »

In light of your findings, you may want to consider a SS instead of the graphics card.  The SS may well cure your problem too and it looks like it will have a much longer life expectancy then the parallel port.  The parallel port is dieing and having a SS may allow to upgrade easier in the future. I can't guarantee any of this but I think I would consider it.

Here is a quote from an email I was copied on concerning soft limits and it sums them up is as a few words as I have seen.

Soft Limits are described in section 5.6.1.3 of the "Mach3Mill Install and Config Guide"

If you were trying to setup Soft Limits, then make sure that you have a consistent Homing strategy (since Soft Limits are based on Machine Coordinates) and double-check that your min/max values are correct - the easiest way is to home your machine, move each axis to it's furthest extent, and see what the values are (by click on the Machine Coords button on the Program Run screen).  Those values, along with 0, make up your min/max (ie. if X is 0 at one end of travel, and -43 at the other end, then your Max will be 0 and your Min will be -43; if Y is 0 at one end and +20 at the other, then your Max will be +20 and your Min will be 0)...

Brett