1. Arduino CNC Shield V3 3D Printer Expansion Board
This 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 module
Simple step and direction control interface
Short-to-ground and shorted-load protection
Five different step resolutions: full-step, half-step, quarter-step, eighth-step, and sixteenth-step
Intelligent 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 protection
Adjustable 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 rates
More info. please click here
3. UNO R3 Development Board
① Download the arduino IDE
②Download the USB chip driver
http: //www.wch-ic.com/download/list.asp? Id = 126 :
③Plug in the UNO development board, the driver will automatically install
④In the die inside select the board UNO
⑤Select the COM port, this can find in my computer, make the uno development board inside the port
⑥Best to choose arduino own routine program, burned into it.
2 x CNC Shield V3 Expansion Board
8 x A4988 Step Motor Driver Module
8 x Heatsink
2 x UNO R3 Board