Quote
Greg Frost
I say 2 or 4 because you could drive 2 motors from a single driver either in parallel or in series as is done by many printers now (mainly prusas and derivatives).
DRV8825 drivers are great for this: 2.2A with proper cooling. You could probably run 3 steppers off of one driver, if you do things right. Four off two would be a piece of cake.