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Description: 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. UNO for Ar-duino module IO port correspondence introduction. Features: 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 Ar-duino module IO port correspondence introduction. Package Included: 1 X CNC Shield Expansion Board.
☆Each road stepper motors only need two IO ports.
☆This expansion board as a driver expansion board, can be used for engraving machines, 3D printers.
☆PWM Spindle and direction pins. 4-Axis support. Runs on 12-36V DC.
☆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.
☆Stepper motor wiring as follows 2A, 2B is a group (red, green), 1A, 1B is a group (blue, yellow), if want to change direction, can be change the position of one group , for example 2A, 2B mutually exchanged.
I'm not sure if this is particular to my drivers (drv8825), but for the life of me I could not get this board working until I realized that while RST and SLP are connected to each other, they aren't actually provided power. Once I soldered +3.3V to those pins, things worked fine. Looking at the original Protoneer design, it looks like this board is wired more or less as it is supposed to, just be aware that it might not work for you without modification.
