Features Premium Control: Supports 6 micro resolutions down to 1/32 steps, intelligent shredding control, and auto selects the correct current attenuation mode for precise and efficient performance. Expansion Parts: Highly compatible with GRBL, this kit is practical for maintenance, parts replacement, and upgrades, making it an essential 3D printer accessory. Safe in Working: Equipped with adjustable current limit, overcurrent protection, and over temperature protection, ensuring a safe and reliable 3D printing experience. Smart Operation: Capable of controlling 2 phase 4 wire stepper motor, offering versatile connectivity options including USB, AC to DC adapter, or battery for easy and convenient operation. Easy to Install: Light in weight, compact in size, and designed for quick installation, making it an ideal choice for effortless 3D printer upgrades and electronic component integration. Specification: Item Type: 3D Printer Accessory Kit Material: PCB Use: Can be used as a driver for engraving machines or 3D printers, for building small CNC routers, engraving machines, milling machines, or robots. Package List: 1 x CNC Board 1 x Electronic Board 4 x DRV8825 Stepper Motor Driver 4 x Heatsink 1 x USB Cable 1 x Pin Header Package List 1 x CNC Board 1 x Electronic Board 4 x DRV8825 Stepper Motor Driver 4 x Heatsink 1 x USB Cable 1 x Pin Header