GRBL 3-axis CNC Control Board GRBL Engraving Machine Control Panel

Features:
USB interface connected, much convenient than serial port or parallel port.
Supporting PWM stepless speed regulation and gray graving.
High integration, easy to assemble, good for DIY enthusiast and 3D printer manufactory.
Off-line Control: supports gcode, txt, tap, nc, ncc, CNC format processing files.
Support Software: grblcontrol/candle(3 axis), lasergrbl(laser).
Supports off-line control to operate it without computer.(the off-line controller need to be purchased separately)