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General Mach Discussion / Re: Spindle RPM feedback, not low enough.
« on: January 24, 2013, 04:24:34 AM »
Timing can not be used now as far as I am aware. Changes were made in the driver quite a while ago. I have looked for the info Art posted about Timing not being any better than an Index but as yet can not find it, I was sure I had copied it so I wouldnt forget, seems I have forgotten where I stored it
We will see what info Rich comes back with, hoepfully he will be able to test.
I think you have said but just to make sure, are you using the parallel port for this machine?
Do you have a second parallel port that you could input the signal via so that it goes direct rather than through a breakout board? Just be carefull if you do that that your power supply is either taken from the computer or the 0v are tied to computers 0v.
Regarding DC supplies 0v being grounded, I have never done that although I hear of people doing it.
Hood
We will see what info Rich comes back with, hoepfully he will be able to test.
I think you have said but just to make sure, are you using the parallel port for this machine?
Do you have a second parallel port that you could input the signal via so that it goes direct rather than through a breakout board? Just be carefull if you do that that your power supply is either taken from the computer or the 0v are tied to computers 0v.
Regarding DC supplies 0v being grounded, I have never done that although I hear of people doing it.
Hood