Ximimark 2Pcs V3 Engraver 3D Printer CNC Expansion Shield Board A4988 Driver Board for Arduino

$9.08
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The expansion board can be used as a drive expansion board for engraving machines, 3D printers, etc. There is a total of 4 steps of the stepper motor drive module slot. (Note that this board does not include the A4988 stepper motor drive module, which can be purchased separately in this shop) | It can drive 4 channels without entering the motor, and each stepping motor only needs 2 IO ports. That is to say, 6 IO ports can manage 3 stepping motors very well. It is very convenient to use and bid farewell to the tradition. Stepper motor operation is cumbersome. | 0.9 compatible. GRBL (open source firmware that runs on an uno that turns the G-code commands into stepper 37signals)PWM Spindle and direction pins. | 4-Axis support (X, Y, Z, A-Can duplicate X, Y Z, or do a full 4th axis with custom firmware using pins D12 and D13)2 x End stops for each axis (6 in total) | Coolant enable,Compact design.