CNC Shield V3 Expansion Board + 4pcs A4988 Stepper Motor Driver Module for 3D Printer 100% brand new and high quality The 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. 1pc x CNC Shield V3 Expansion Board 4pcs x A4988 Stepper Motor Driver Module.
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