Originally Posted by
garymiller397
Thanks for the info. Unfortunately the price on the 1605's was just too good to pass up.
I now have another problem. The build is going fine and I am now wiring and testing the electronics. I could not find an old computer with a parallel port so added an expansion card. Mach3 seems to be communicating fine with the parallel port because when I use the arrow keys, the X, Y and Z values in Mach3 change on the screen. But I don't seem to be getting the correct outputs from the parallel port. All pins seem to have about 4.6 volts as an output and the arrow keys will not change the voltage. I have tried two different parallel port cards (1 PCI and 1PCIe) with no difference. What am I doing wrong?