[gtschance]

Not in front of it right now but ....

Ports and Pins
Inputs (scroll down) to find E-Stop
Click on the Active Low (or high) and reverse it from what it is set to now.

I will look later when I am in front of my machine if you still need help.

George

[studysession]

THanks -

[studysession]

Found the thing you mentioned and now can get the green light going. Cannot control any of my steppers though. Went through and comparing the correct pin numbers and a lot were not the same as what I used before for each axis so tried changing them and no luck.

Mach3 thinks the thing is moving but it really is not.

[ger21]

Make sure you have a port # assigned to each pin.

[Kipper]

I did some searching _ I think I am going to setup a 2nd HD that weill allow to play with each version.

I have some other issues to work out as well. This is complicated getting upgraded to Mach3.

Nah...just write down the settings from Mach2 and enter them into Mach3.....Unless you know the pins and ports settings it seems daunting but once you do...then you know them! You can have both versions of Mach running together afaik

[Blaster33442]

just bought a mini mill from harbor Freight about a week ago and the x and y axisl ead screws are 20 threads per inch and the z axis is 1.5 mm pitch

[studysession]

just bought a mini mill from harbor Freight about a week ago and the x and y axisl ead screws are 20 threads per inch and the z axis is 1.5 mm pitch

Thanks -
What does pitch mean?

[gmfoster]

Thanks -
What does pitch mean?

The distance between individual threads.

A 20 tpi screw has a pitch of .05..

Inch threads are typically refered to as threads per inch. TPI while metric threads are typically refered to as picth the distance between threads.




BTW google can be your friend on these simple questions.

Garry

[studysession]

Thanks -

[Pompey Dockyard]

Hi StudySession,
I don't have any experience with Mach2 or Mach3 but have played around with both (no steppers connected) and they can be confusing to the beginner. I downloaded a bunch of tutorials from the Artsoft web site for Mach2/3 software, I can't remember exactly where on the site I got them from but if you look you should be able to find them quite easily. They should point you in the right direction.

Cheers,
Dave.
:wave:

[Kipper]

Hi StudySession,
I don't have any experience with Mach2 or Mach3 but have played around with both (no steppers connected) and they can be confusing to the beginner. I downloaded a bunch of tutorials from the Artsoft web site for Mach2/3 software, I can't remember exactly where on the site I got them from but if you look you should be able to find them quite easily. They should point you in the right direction.

Cheers,
Dave.
:wave:

They're here hth

[studysession]

Hi -
Have things working with Mach2 but no accuratly(SP?). How do I tell what drive I have?

Thanks

[studysession]

Another question when doing the 200 x 20 x20 thing that "ger21" talked about in the first reply of my original post. Does it make a difference when I choose metric instead of inches in the settings?

If so how can I make sure all my calculations are for metric?

Thanks again.

[lewisd]

Your photo looks like the stepper motors are not direct drive so both drive pully ratio and tpi of ball screws will set how many turns your motors do to move 1 unit inch-cm?? One of the Mach videos and mach manual both tell how to calibrate it. Also peeking at control board might tell you name to do google search on board manufacturer to know which paralell port pins are x-step,x-dir, y-step,y-dir etc. It sure is easy to let the smoke out of electronics, bash end of travel when blindly setting stuff. Grizzly tools also sells the mill as a non-cnc and their manuals are nicer than Harbor Freight.

[studysession]

OK - took the assembly apart for the stepper.

On the pully - The pinion has 12 teethand the spur has 24 teeth.
The screw thing says 0.025

[lewisd]

I dug around a bit and found that the Europeans would not likely use 1/4" 20tpi threads because your metric-conversion errors would make a mess. Direct drive to a 20tpi screw in full-step gives 0.00025inch, with scale set to 4 gives 0.001in / step. This will never microstep down to any integer of .oo1mm. Maybe someone was smart enough to design pully ratio to make it work??
More likely they threw away imperial screws and used 2mm thread which comes out even with no work. Direct drive to a 2mm pitch screw with a full stepping motor gives 1/100mm per step.
You likely have 2mm screws with motors spinning 2-1 maybe. There are lots of people here that can figure this out for you after you hand rotate your screw a hundred times and see if it comes out even mm. My brain is poisoned by inches and I don't do the easy base 10 metric stuff very well.