keyestudio CNC Shield V4.0

CNC Shield V4.0 features:
1. 3 axis stepper motor driver
2. Compatible with micro-drive laser engraving machine, three-axis CNC engraving machine,.
3.2A can be controlled within the two-phase four-wire stepper motor.
4.Released the digital IO interface, easy to connect to other modules, such as ENDSTOP.
5.Released the I2C interface, you can connect to the LCD I2C or other I2C module.
6.power DC5v interface, 7.5-12V voltage input.
7.GRBL compatible
8.worked with arduino nano.
CH340 Nano board
*Download the board driver here.
CH340 Nano 3.0 controller is a small, complete board based on the ATmega328. It’s a open source Simple I/O platform with 12 Digital I/O Pins (of which 6 provide PWM output), 8 Analog Input Pins, pin 0 (RX) and 1 (TX) used to receive (RX) and transmit (TX) TTL serial data, a Mini-B USB connection, an ICSP header and a reset button