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1

General Mach Discussion / Computer Problems-Jittery steppers

« on: September 20, 2011, 02:29:15 AM »

Here's the problem-I just built a cnc plasma table, and got all the electronics hooked up.  The motors move, but they run rough as hell.  To narrow things down, I borrowed another computer, installed mach3 with the same settings, and the problems disappeared.  The computer that runs rough is a Dell GX620 I got refurbished on Ebay.  Everything on the computer seems fine, except when it comes to the motors. I even tried installing a parallel port card I had, and it didn't make any difference.  Anybody seen anything like this?  Or should I start looking for another computer?

2

General Mach Discussion / What Do You Think?

« on: October 06, 2010, 09:19:53 PM »

I'm looking for a dedicated computer to run Mach3 and my Shopmaster Patriot setup.  This won't be hooked up to the internet or anything, all my design work is done on my house computer.  My first stop was at Best Buy, and when I told them I needed an RS232 port on the computer, they said they couldn't do it and that I would need to go to a computer store that could custom build a setup for my needs.  So my next stop was to a local computer store, and after I gave them the mach3 requirements and told them what I'm using it for, this is what they came up with:

Celeron 430 1.8GHZ 800FSB
Asus P5g41-M LE LGA775
DIMM DDR2 1GB 800MHZ
Case MATX FX-638M 350W
DVD Liteon black sata
I/O Lava PCI serial card
VGA PNY Geforce GT 220 1GB
HDD Hitachi 500GB 7200RPM Sata
SW Windows 7 Home Prem 32-bit
Keyboard black PS/2
Mouse LGT Optical black (OEM)
1 Year parts and labor warranty

Price including tax is $563.82

Does anybody see any problems with or have any suggestions for this setup?