Product Review

Specification:
-Connection: USB (USB-CH340)
-Software: GRBL controller, UniversalGcodeSender
-Input voltage: 12-36V
-Master chip: atmel 328P (arduino nano)
-Stepper motor driver: A4988
- Spindle drive chip: MOSFET (recommendation 12~36V, current : within 10A )
- Spindle PWM speed: Support
- Support stepper motor: 12V, maximum current of 2A or less is recommended within 1.5A and additional heat. (Any stepper motor 42, 57)
- Laser engraving: Support
- Power Interface: 5.5-2.5mm DC interface

Advantage:
1.Improved power interface: original plastic interface changed to full metal shielded interface.
2.Improved USB interface: The original USB interface is patch soldering, transport collision and improper use, easy to drop, now changed to plug-in, very strong.
3.The spindle drive increases the optocoupler isolation, which makes the control board generate less heat, and the spindle speed adjustment is more linear and safer.
4.The stepper motor drive increases the self-recovery fuse. When a short circuit or fault occurs, the power supply is cut off and the fault indicator light is displayed.
5.The 12V step-down increases the self-recovery fuse. When a short circuit occurs, the power can be cut off in time to avoid damage.
6.Optimize layout, control area and drive area separation, run more stable".

Package include:
1x GRBL 3 axis control board