1. This expansion board as a driver expansion board can be used for engraving machines, 3D printers.
2. Compatible with micro-drive laser engraving machine, three-axis CNC engraving machine, and worked with Arduino nano.
3. It is a total of four slots, can drive four A4988 stepper motor. Each road stepper motors only need two IO ports. In other words, six IO ports can be well managed three stepper motors.
4. Released the digital IO interface, easy to connect to other modules, such as ENDSTOP.
5. 2A can be controlled within the two-phase four-wire stepper motor.
6. Released the I2C interface, you can connect to the LCD I2C or another I2C module.