Messages

1

General Mach Discussion / Re: Anybody running Intel Atom's on MiniITX boards?

« on: November 13, 2009, 10:03:56 PM »

Hmm - I think that the drive voltage or current capacity that the parallel port is putting out is just marginal for that gecko... you might try swapping the gecko module for one of the others, and/or a buffered breakout board.

2

General Mach Discussion / Re: Anybody running Intel Atom's on MiniITX boards?

« on: November 13, 2009, 02:19:16 AM »

Do you have a breakout board, if so which one, and which gecko are you using?

3

General Mach Discussion / Re: Step & Dir Pulse

« on: August 28, 2009, 08:59:03 PM »

And to make things more complicated depending on how the timing is implemented, if a SMI comes in at just the wrong moment, it can totally throw off the pulse timing -- definitely being able to cause a late pulse end; and possibly being able to cause a late pulse start (effectively shortening the pulse width) though I'd have to see the source code for mach's ISR to be able to tell for sure.

4

General Mach Discussion / Re: Replacing a Resolver of an AC Servo with an Encoder

« on: August 27, 2009, 08:27:41 PM »

Wait a sec -- that needs an absolute encoder doesn't it? That's not so cheap...  <slaps forehead> doh!

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General Mach Discussion / Re: Replacing a Resolver of an AC Servo with an Encoder

« on: August 27, 2009, 08:15:06 PM »

How about http://usdigital.com/   -- much lower cost?

6

General Mach Discussion / Re: Step & Dir Pulse

« on: August 27, 2009, 10:37:27 AM »

On the other hand... (just generally speaking) why run a component at the limit of it's supported performance (even taking into account the manufacturer de-rating the spec) when you don't have to? If I did my math right at 7 microseconds, and a 50% duty cycle, the max step rate is about 71khz... so a 10000 step per inch setup could rapid at a max of about 428 ipm... at 6 microseconds it goes up to 83khz and 500ipm... and the other potential issue is how tightly controlled is that pulse width being output (i.e, might jitter affect it)?

7

General Mach Discussion / Re: Step & Dir Pulse

« on: August 27, 2009, 01:19:34 AM »

Er... if it says 5 ***min*** pulse, shouldn't it be set something above 5? Like 7 or 10?

8

General Mach Discussion / Re: LPT2 adapter

« on: August 24, 2009, 01:34:14 AM »

I dunno where you are, but newegg.com has many PCI parallel port cards... search for "pci parallel", not "lpt2 card"

9

General Mach Discussion / Re: Anybody running Intel Atom's on MiniITX boards?

« on: August 21, 2009, 05:24:09 AM »

Thanks for the reply...


Anybody else?

10

General Mach Discussion / Anybody running Intel Atom's on MiniITX boards?

« on: August 19, 2009, 03:20:02 AM »

I have a machine that I'm trying to upgrade from a DOS controller to Mach; the thing is it's already got an early VIA 500Mhz C3 MiniITX board in it -- so what I'd like to do is simply replace the board with a more modern one, and run Mach3 under a stripped-down version of Win2K.

The boards that I was wondering about are these:

Intel D945GCLF
or
Intel D945GCLF2
from http://www.mini-box.com/Atom

I really would like to avoid having to change the board form factor; installing an ATX in there would be quite a chore (everything would have to be disassembled and re-drilled, and the control box is rather heavy and awkward)...

So - anybody have any experience with these? Do they work well with Mach?