Proximity switches or limit switches

[JAZZCNC]

Ive changed homing settings in Mach and it woks fine now. Other problem was the steppers were stalling but I've increased the current output on the drivers and its flying along now.
Just need to learn how to work out steps per mm with my 2005 ball screws and 26 teeth driver pulley to 22 teeth driven ratio.

Don't fry your noodle trying to work it out just let mach3 do it.! . . Go to the Settings tab, just above Reset there's a button says "Set Steps per unit" this will work it out for you by moving a distance you tell it and by measuring the actual distance it moved it works out the Steps per required.