Homebrew PCBs

> A DC gearhead motor is best for lead screw applications as it allows 
> the screw to be driven "directly" without any complications provided 
> speed and torque requirements are met. It doesn't get much simpler 
> than this;


Sure it does, eliminate the ball screw and coupling and switch over to 
a linear motor - that is much simpler!  However, in reality, much more 
expensive too :-(