Hi guys. I'm using A4988 stepper drivers on an arduino nano to drive 10mm micro stepper motors at 5V.They are not specified for amp draw, but i have set the limiter to the lowest setting and am still making the motors glow. I suspect they need only 50-60mA. The controller wont let me go below about 120mA. I need to either add resistors to burn up the surplus energy, or change the onboard poti to allow me to lower the current. Any suggestions? Which ones do i need to change?