?????COMPATIBLE?: A4988 driver board widely used in 3D printers and small CNC machines.
?????INTEGRATED PROTECTION?: It is equipped thermal protection, over-current protection and ground fault protection.
?????RESOLUTION??5 different step resolutions, full-step, half-step, quarter-step, eighth-step, and sixteenth-step.
?????CURRENT??Adjustable current, you can set the maximum current output with a potentiometer. There is a small trimmer potentiometer to set the current limit. Tutorials are available on website.
?????CUSTOMER SERVICE?: When you buy our product you also get lifetime friendly customer service ????. Please contact us for any question. One mini screwdriver included as a gift.