Gikfun 3 Axis CNC Stepper Motor Driver Controller Board 3.5A TB6560 for Arduino EK1467 TB6560AHQ chip - High power, maximum 3.5A drive current Professional design, two-stage signal processing, super anti-jamming. 1-1/16 microstep setting - Higher accuracy Adjustable drive current settings for each axis - 25%,50%,75%,100% of full current can be set for different stepper motors . Overload, over-current and over-temperature safety - Full protection for your computer and peripheral equipment