Features • Premium Control Technology: Achieve superior precision with support for 6 micro resolutions down to 1/32 steps, ensuring smooth operation for your projects • Versatile Expansion Parts: Compatible with GRBL, this expansion board kit simplifies maintenance and upgrades, enhancing the functionality of your machine • Enhanced Safety Features: Equipped with adjustable current limits, overcurrent protection, and over-temperature safeguards, promoting safe operation during every task • Smart Motor Control: Effortlessly control 2 phase 4 wire stepper motors; connect via USB or use an AC to DC adapter for flexible power options • Quick and Easy Installation: Compact and lightweight design allows for hassle-free installation in just minutes, getting you back to creating faster Features: 1、Premium Control: Supports 6 micro resolutions down 1/32 steps, intelligent shredding control, and auto selects the correct current attenuation mode. 2、Expansion Parts: Highly compatible with for GRBL, the expansion board kit is very practical for maintenance, parts replacement, upgrade and so on. 3、Safe in Working: With adjustable current limit, overcurrent protection and over temperature protection, the 3D printer kit ensures high work safety. 4、Smart Operation: Can control 2 phase 4 wire stepper motor, simply connect it to the computer using a USB cable, or use an AC to DC adapter or battery to start operation. 5、Easy to Install: Light in weight and compact in size as well, the CNC engraving machine expansion kit is very convenient to install within minutes. 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