My plan is to build 3 axis router. The maybe be option for fourth axis still. I use LinuxCNC. I will use Delta ASDA-B2 drives and Delta ECMA -servos. Goal is also to control spindle via computer. I have understood that I'll need 5i23 - PCI 72 bit 3X50 pinout 400K FPGA card but what other MESA cards also? I am really newbie with CNC-electronics so can somebody help what other cards do I need to get servos running?