GRBL off-line working hand controller & 3 axis USB CNC control board for GRBL1.1
I. GRBL 1.1J,USB port cnc engraving machine control board, 3 axis control
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
GRBL controller Function:
1. Manually control: manually adjust X, Y, Z axis location as engraving starting point, manually open or close spindle, manully open or close cooling fan
2. File engraving: after off-line controller save file, it can connect the GRBL control board and process engraving, no need to connect PC computer
3. Save file: after the off-line controller connect PC, it will be recognized as USB, large capacity storage device, can access engraving file directly.