This is a nice object... MakeBlock stepper motor driver ...but is seems a bit expensive. I like it because it drives 4 wire stepper motors using only two wires of the Arduino (corresponding to Direction and Step). But are there any alternatives?

2 wire + gnd stepper motor drivers

Topic		Replies	Views
easy drivers vs pololu carriers A4988's vs DRV8825's Motors, Mechanics, Power and CNC	5	12839	May 6, 2021
Hardware recommendation Motors, Mechanics, Power and CNC	8	3357	May 6, 2021
Swap EasyStepper for a A4988 General Guidance	9	1659	May 5, 2021
stepper motor takes a lot of pins General Guidance	13	5852	May 5, 2021
Easy driver vs StepStick A4988 Motors, Mechanics, Power and CNC	5	11335	May 6, 2021