Not so difficult to do, I suspect - I visited a weaver in the Outer Hebrides a year or two back who was using a floor loom, but, in effect, bolted on the side there was a solenoid-operated mechanism for operating the heddle levers (sorry - full technical terms escape me!). The solenoids were operated by software running on an Apple Mac (I think it was). So, I'm waiting for the first Mach3-controlled loom to appear in this forum! Punched cards are so nineteenth century - use Mach3 and take a giant leap into the twentieth