| Can drive four axes | four receptacles for A4988, DRV8825 or other StepStick compatible drivers. |
| Headers for XYZA steppers, XYZA end stops, spindle control, ESTOP. |
| Screw terminal block for power input. |
| Compatible with GRBL firmware. |
| This board uses CH340 USB-to-serial interface chip, instead of 16U2 (USB drives installed automatically under Windows 7/8). |
| Added 3 rows of holes for wiring. |
| Added 2 rows of holes for dupont style headers (headers are useful if you connect cables directly to Arduino board). |
| 1 x CNC V3 Shield1 x UNO R3 Arduino compatible board4 x A4988 Stepper Drivers with heatsinks |
