Vevor 3020 cnc Autolevelling

[iBeta]

Ok, thanks for all the information.
Think will try the PCI card first, then see (er actually already ordered it with the machine so no choice now). Did wonder how an external motion controller can be 'better' than PP. If the mach3 is giving timing pulses via the parallel port, how can these be improved upon by an addon controller?
If I do end up having to use an external motion controller, can the autolevel signal still be connected directly to the PP? From others, it seems making a reliable pcb is impossible without autolevelling.
On edit:
found this: http://lab.whitequark.org/notes/2014...dden-features/
which has the PP pinouts - 15 is the probe input. It also has a hack to control spindle speed via software.

[JAZZCNC]

Did wonder how an external motion controller can be 'better' than PP. If the mach3 is giving timing pulses via the parallel port, how can these be improved upon by an addon controller?
If I do end up having to use an external motion controller, can the autolevel signal still be connected directly to the PP? From others, it seems making a reliable pcb is impossible without autolevelling.

It's all about the Speed and Quality of the pulses. Technicly Mach3 PP driver is breaking all the Rules in relation to Windows. It basicly runs has a Virus in the background and windows knows nothing about it, in fact it kind of controls windows.!! Many Boffins told Art fennerty Mach designer it couldn't be done.!! . . .So he did it anyway.!!!
The done shot is that because it's software driven it's Timing/speed limited and to some degree quality limited.

Ex Motion control cards have dedicated hardware designed to optimise the task and provide crystal clear pulses. This means they can output much faster and stable pulse streams. They also relieve Mach3 of many funtions so lower the work load quite a lot.
The upshot is No missed steps due timing issues. Faster and smoother movement because the frequency of pulses can be much higher and higher quality pulses make for smoother running. Often people are suprised when they change from PP because the noise from the steppers changes.!!

You'll still be able to use Leveller with EX Mo because they take over the dutys of Inputs/outputs. Often doing a better job due timing issues etc and providing more of them.
Honestly is your using Mach3 don't bother with the PP. ( Linux is differant because it hasn't got Windows to deal)

[cropwell]

A reasonable solution to levelling is to machine a pocket to suit your board size in some scrap MDF, and fix your PCB in it. If you are doing large PCBs, I would have them made as cutting off copper is a slow business.

Then again, if you are anything like me and only find your design errors when testing the built circuit, if you have cut your own board there is less intensity to that 'Oh F***!' moment.

Rob

[iBeta]

A reasonable solution to levelling is to machine a pocket to suit your board size in some scrap MDF, and fix your PCB in it. If you are doing large PCBs, I would have them made as cutting off copper is a slow business.

Then again, if you are anything like me and only find your design errors when testing the built circuit, if you have cut your own board there is less intensity to that 'Oh F***!' moment.

Rob

I agree with the FM... especially when its taken ages to develop/etch, and then drill 1000's of holes. Am really hoping the CNC will make the whole process (no pun intended) go much smoother.
From what I've seen of youtube vids etc, not using autolevelling is a crap shoot, and if it is so simple to implement, what's the downside?

[iBeta]

It's all about the Speed and Quality of the pulses. Technicly Mach3 PP driver is breaking all the Rules in relation to Windows. It basicly runs has a Virus in the background and windows knows nothing about it, in fact it kind of controls windows.!! Many Boffins told Art fennerty Mach designer it couldn't be done.!! . . .So he did it anyway.!!!
The done shot is that because it's software driven it's Timing/speed limited and to some degree quality limited.

Ex Motion control cards have dedicated hardware designed to optimise the task and provide crystal clear pulses. This means they can output much faster and stable pulse streams. They also relieve Mach3 of many funtions so lower the work load quite a lot.
The upshot is No missed steps due timing issues. Faster and smoother movement because the frequency of pulses can be much higher and higher quality pulses make for smoother running. Often people are suprised when they change from PP because the noise from the steppers changes.!!

You'll still be able to use Leveller with EX Mo because they take over the dutys of Inputs/outputs. Often doing a better job due timing issues etc and providing more of them.
Honestly is your using Mach3 don't bother with the PP. ( Linux is differant because it hasn't got Windows to deal)

Ah, thanks... I'll get a uc100. You guys have probably saved me a lot of problems, and I guess it don't take too many ruined 200x200 double side'eds to pay for it.