Quote Originally Posted by ngwagwa View Post
JAZZ - yes the 5v to the BOB is fed from the vertcal 42 pin connector on the Baldor card. I think I would prefer to by a 5v transformer which should then make the Baldor redundant, just have to work out how to do the E-Stop.

I have found the BOB axis controls, they also feed into the 42 pin connector and am looking for the feeds from the board to the steppers (4 found and 2 to go)
These boards are usually wired as this below. Trace the wiring back just to double check it to be sure.
Click image for larger version.  Name: s-l10001-768x448.jpg  Views: 344  Size: 49.0 KB  ID: 27750
Shows 5v in on the bottom 3 right connectors. This is likely how it's powered atm.
e-stop P10, limits P12-15, spindle switch+speed all run off the seperate 24v input on the right.

Was at least 5 years ago when I was advised against using the bottom connectors for 5v. Told it's more ideal to modify a usb lead instead due to the protection circuitry.
Trying to re-find information on the net is a pig.