Model Number: DRV-8825 Brand: Arduino Stepper motor driver module for Arduino and Raspberry Pi DIY projects involving stepper motor driving such as 3D printers, Laser cutter and engraver and desktop CNC machine. Specifications: Six different steps resolutions: full step, half step, 1/4-step 1/8-step 1/16-step, 1/32-step Can be interfaced directly with 3.3 V and 5 V systems Over-temperature thermal shutdown, over-current shutdown.