UNO CNC Shield V3 Combo

UNO R3 ATmega328P SMD Board with USB cable CNC Shield V3 Combo   This board based on the ATmega328P. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz quartz crystal, a USB connection, a power jack, an ICSP header and a reset button. It contains everything needed to support the stepper motors of your CNC machine. Simply connect it to a computer with a USB cable or power it with an AC-to-DC adapter or battery to get started. The CNC Shield V3.0 allows you to build a engraving machine, 3D printer, mini CNC and other similar devices. It is designed as a combo on top of microcontroller board requiring no external connections and wiring. There are 4 slots on the board for plugging in stepper motor drive module which can drive 1 stepper motor each. Controlling each step stepper motor requires only two IO pins on the microcontroller board. Just install the GRBL firmware, you can then quickly build a DIY CNC engraving machine.