Descriptions:1. Arduino CNC Shield V3 3D Printer Expansion BoardThis expansion board as a driver expansion board, can be used for engraving machines, 3D printers.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. Very convenient to use.UNO for Arduino module IO port correspondence introduction.2. A4988 Reprap Step motor driver moduleSimple step and direction control interfaceShort-to-ground and shorted-load protectionFive different step resolutions: full-step, half-step, quarter-step, eighth-step, and sixteenth-stepIntelligent chopping control that automatically selects the correct current decay mode (fast decay or slow decay)Over-temperature thermal shutdown, under-voltage lockout, and crossover-current protectionAdjustable current control lets you set the maximum current output with a potentiometer, which lets you use voltages above your stepper motor's rated voltage to achieve higher step rates3. UNO R3 Development BoardInstructions:① Download the arduino IDE: ②Download the USB chip driver: ③Plug in the UNO development board, the driver will automatically install④In the die inside select the board UNO⑤Select the COM port, this can find in my computer, make the uno development board inside the port⑥Best to choose arduino own routine program, burned into it.Package Included:2 x CNC Shield V3 Expansion Board8 x A4988 Step Motor Driver Module8 x Heatsink2 x UNO R3 Board
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