Again I am REALLY surprised I have not turned up any pre-existing libraries for such a thing,
Clearly it is a solved problem based on Reprap printers everywhere using steppers.
How do I get a continous pulse train coming off the arduino of variable frequency, without blocking everything else?
I need to control 2 stepper motors, speed only not elapsed steps
atleast untill I come up w/ a brilliant other plan where I can use 1 timer for 2 or 3 steppers.