It utilizes all Arduino pins and provides an easy way to connect everything, the stepper motors, the spindle/ laser, the limit switches, cooling fan etc. Arduino CNC Shield – For connecting the stepper drivers to the Arduino, the easiest way is to use an Arduino CNC Shield.Drivers – For driving the stepper motors we need drivers and common choices when it comes to smaller DIY CNC machines (using NEMA 14 or 17 steppers) are the A4988 or DRV8825 drivers.Stepper motors – Obviously, the stepper motors provide the motion of the machine. Specifically, we need an Atmega 328 based Arduino board, meaning that we can use either Arduino UNO or Nano.
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