Messages

4991

General Mach Discussion / Re: external START bottom

« on: March 18, 2018, 07:57:23 PM »

Hi,
do you have a spare input on your BoB/controller?

Craig

4992

General Mach Discussion / Re: Step/Dir control of spindle?

« on: March 18, 2018, 07:55:45 PM »

Hi Roger,
as I recall all the lathe threading code is in place already but had a bug in the sychronisation part. Apparently Greg and
Andy have decided on a different approach (multipulse?) which has required some significant rework.

Part of that rework was to make the lathe threading code compatible with the planned API.

Craig

4993

General Mach Discussion / Re: Step/Dir control of spindle?

« on: March 18, 2018, 07:51:42 PM »

Hi,
Mach of whatever flavour requires a spindle of significant rotational inertia and reserve torque to accomplish
lathe threading. Not even the most superb PID control will ever overcome inadequacies in the spindle having
said that a good PID controller will make the most of whatever spindle you have.

Craig

4994

General Mach Discussion / Re: Only X-axis motor is working

« on: March 18, 2018, 07:47:26 PM »

Hi,
do you have a manual for the board? How about some pics.

If the board is all in one, quite common amongst entry level Chinese boards it may be that one or more of the drivers
is faulty and need repair or replacement.

Were you replacing faulty components consider buying separate drives and controller, then if one fails you don't have to
throw out the rest.

Craig

4995

General Mach Discussion / Re: Step/Dir control of spindle?

« on: March 18, 2018, 07:40:42 PM »

Hi Roger,
the recent Mach4 builds have PID control, index pulse only at this stage to my knowledge.
I haven't tried it out so I cant comment how well it works or even if it works. I was lead to believe that
it was an important stepping stone to lathe threading in Mach4.

Craig

4996

General Mach Discussion / Re: Probing

« on: March 18, 2018, 06:31:09 PM »

Hi,
do you have a manual for the board? Looks like a USB to single port device in which case you probably
only have five separate inputs. You are likely to need one for an Estop, one for limits,who knows how many
you want for homes...as you can see having one input spare for a probe is going to be tough and three separate
probe inputs plain out of reach.

What does the vendor say?

Craig

4997

General Mach Discussion / Re: Step/Dir control of spindle?

« on: March 18, 2018, 06:11:17 PM »

Hi Roger,
I thought PID was already there but not multipulse PID.

Craig

4998

General Mach Discussion / Re: Step/Dir control of spindle?

« on: March 18, 2018, 05:27:57 PM »

Hi,
Mach4 doesn't handle threading per se, the motion controller handles it. The only one I'm familiar with is the ESS
and it not not capable of threading currently but the preliminary code is written and it looks like one pulse per
revolution at this at stage.

Craig

4999

General Mach Discussion / Re: How to setup port and pins and stuff.

« on: March 18, 2018, 05:22:39 PM »

Hi,
looks like you have  GRBL controller. This is a Mach forum and I doubt you'll find any information of use for
such a controller.

May I suggest having a look at YouTube at both Mach3 and GRBL clips, you may note the differences.
Mach is useful for large machines in a way that GRBL is not.

Craig

5000

Mach4 General Discussion / Re: How to examine # variables?

« on: March 18, 2018, 09:56:27 AM »

Hi,
Mach4 is superior to Mach3 in any number of ways.

Craig