Use a couple of 555 timers to control the speed and direction of a stepper motor.
Here is what you will need:
After plugging on the motor driver, connect the VDD(or VCC) pin to +5vols, GND to, obviously GND and, VMOT to 12 volts. Don't forget to connect the SLP and RST pins together! I used a small jumper for that.
Please note:- For the IC(1), the pin6 needs to be connected to pin 2 of the chip.
Please move to the next step before starting making the circuit.