Hi Guys
I have a basic system consisting of a XP PC with parallel port connection to a DIYCNC system 4 package that controls 3 steppers on a SX2 type mill. I use mach 3 and CAMBAM.
The XP PC has packed in and I thought it would be a reasonable change to use a spare laptop which wouldn't have to live in the garage. I've been trying to learn a bit over the last few days, and get the impression ethernet might be less prone to problems than USB.
I had assumed I needed the UC300ETH, a power supply for it and the parallel cable would go straight from the UC300 into the original parallel connection on the controller. Now I've cottoned on to the UCSB BoB.
Is a BoB essential, or just a tidy way to do things?
Also, the UC needs a 12-24V PSU, is there any reason an old laptop charger rated at 19.5 V 4A couldn't be used?

Thanks
Ian