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General Mach Discussion / Re: Testing for Missed Steps

« on: November 01, 2016, 05:30:15 AM »

I think you should fit a common (star) Earth tag at the controller end. This tag would then be securely connected to Earth. All shielded cables would have their shield connected to this tag (the shield at the other end of each cable insulated and left unconnected). Your home switches should use shielded cable and your estop should use shielded cable.
Treat Earth and GND as two separate circuits.

Some while back I did a short write-up (mainly for beginners) which may be of interest. http://openbuilds.com/threads/electronics-101.693/

Tweakie.

2742

General Mach Discussion / Re: Testing for Missed Steps

« on: November 01, 2016, 02:06:54 AM »

Just a suggestion…

You should regard increasing the Debounce as a sticky plaster rather than a cure and you really need to address the cause of the problem which, from what you say, could well be electrical noise.
As a first step, check that your limit/home switches (and Estop) use good quality shielded cable, with the shield connected to a ‘single point Earth’ at the controller end only.

Tweakie.

2743

General Mach Discussion / Re: new computer set up

« on: October 28, 2016, 02:04:20 AM »

Hi Kevin,

The Settings screen (Alt-6) has an axis calibration feature (set Steps per Unit).

Tweakie.

2744

General Mach Discussion / Re: new computer set up

« on: October 27, 2016, 04:47:29 AM »

Do you have access to your old PC hard drive?, if so then the <your profile> .xml file (in the old Mach3 folder) will contain all your previous Mach3 settings. If you copy that .xml file to the Mach3 folder of your new PC then you should be good to go.

Tweakie.

2745