Depending on the power (voltage and current) specifications of the Servo you are using, you will need a driver to match them.
- If your motor is 5 to 25V and less than 2A, we can use the same L298N board and follow a tutorial like this one. These are hard to control individually if you have more steppers.
- You can also use the Sparkfun Stepper Easy Driver (6V to 30V and 2A max supply). More info on that here and a different tutorial here with an accompanying video.
- For more powerful servos you can use the TB6600 driver. This is a great tutorial for it.
Another reason to choose one of the last two drivers (easydriver or TB6600) is that they allow to move in micro-steps so that your motors have a bit more precision depending on the application.