This is Red A4988 Stepper Motor Driver Controller Board. It is made of superior material, safe and stable, great for 3D printers. A4988/DRV8825 can also be used, but pay attention to direction when inserting, otherwise, the driver may be burned down. Pin Configurations: Features Compact size, easy to install and use. All jumpers hit the ON position to indicate 16 subdivisions (4988) or 32 subdivisions (8825). Jm connection motor; Jv Connects 5V and 12V-24V Power Supply. E /S /D /G of Jc corresponds to Enable /Step /Dir /Gnd driving signal output on the connection respectively.
