Check the listing for details. 32bit GRBL 4-Axis Stepper Motor Driver Controller Board For CNC Laser Engraver. Condition: New. Listed at 39.53 USD. --ARM32-bit control board 32-bit MCU control board, running faster, the maximum no-load speed reaches 40000mm/min, better algorithm optimization, less vibration when the machine moves at high speed, and more stable performance. --X/Y/Z/A four-axis drive, Y-axis double drive. Support for rotary axis. More powerful driving ability. --All signals are isolated by optocoupler, with strong anti-interference ability. Optocoupler isolation technology, strong anti-interference ability, more accurate engraving. --It can be connected to 300W/500W spindle. It can be matched with spindles of various powers, with higher adaptability. --PWM/TTL software to adjust laser power. PWM output frequency 10kHz, higher engraving precision and clearer details. --Split design, control, drive, and expansion boards can be replaced. Split design, more convenient to use. --6-way limit switch, 5V/12V/24V constant voltage pins. --5V power output port, software controllable, easy to expand various functions. --It can be connected to a high-power driver. --The stepper drive subdivision is adjustable, and the machine operates more accurately. --It can connect 775 motor/3pin laser 4pin laser/offline controller. --Built-in laser anti-burn mode, laser S value >=100, after the laser is turned on, if there is no movement within 5S, an alarm will occur. A4988 driver and 8825driver can be replaced with each other --8825driver , 2A it is better for Nema23 57 Motor --A4988 driver support most Nema17 motor. Package Listing： 1* 4axis Controller 1* Type C Cable 1* Motor Cable CONTACT TO SPINDLE: CONTACT TO 775 MOTOR: EXTERNAL DRIVER: Application Software：