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Very simple Stepper Motor Driver Concept, suggestions or input?

Here is a concept stepper motor driver that I came up with. It supports half-stepping too. Any comments or suggestions are appreciated as I know that this thing is far from perfect. I also am making a 3-Axis CNC DB25 version schematic of this controller which I will post up later.

Picture of Very simple Stepper Motor Driver Concept, suggestions or input?
caitlinsdad4 years ago
So how does this compare with the stepper motor drivers that already exist and have datasheets for?