Product Name: 3D Printer Stepper Motor Driver Module Drv8825 Stepper Motor Driver Controller Vq3905 Model NO.: VQ3905 Transport Package: OPP Bag Specification: 34x41mm Origin: China Product Description 3D Printer Stepper Motor Driver Module DRV8825 Stepper Motor Driver Controller VQ3905Product Description1.Simple step and direction control interface.2.Six different step resolutions: full-step, half-step, 1/4-step, 1/8-step, 1/16-step, and 1/32-step.3.Can interface directly with 3.3 V and 5 V systems.4.Over-temperature thermal shutdown, over-current shutdown, and under-voltage lockout.5.Short-to-ground and shorted-load protection.6.4-layer, 2 oz copper PCB for improved heat dissipation.7.Exposed solderable ground pad below the driver IC on the bottom of the PCB.8.Module size, pinout, and interface match those of our A4988 stepper motor driver carriers in most respects.