Michael posted detailed instructions of how to set up your A4988 stepper motor driver’s motor current limit:
One important thing to set up when using these drivers is the motor current limit. This is especially important when you’re using a higher input voltage than what the motor is rated for. Using a higher voltage generally enables you to get more torque and a faster step speed, but you’ll need to actively limit the amount of current flowing through the motor coils so that you don’t burn your motor out.
See the full post at the-diy-life.com.
Check out the video after the break.