CNC Kit 1X Shield & 4X A4988 Drivers for Arduino UNO R3 ATmega328P CH340G

Features: V3 Engraver 3D Printer CNC Shield Expansion Board A4988 Driver for Arduino This expansion board can be used for engraving machines & 3D printers 4 stepper motor connection. Each connection can control one A4988 motor That means you can connect 4 stepper motors into this board Each road stepper motors only need two IO ports In other words, six IO ports can be well managed Connection Instruction When inserting the A4988 module, must be careful not to insert opposite Stepper motor wiring as follows:2A, 2B is a group (red, green), 1A, 1B is a group (blue, yellow) If you want to change direction, change the position of one group Example: 2A and 2B can mutually be exchanged A4988 StepStick Stepper Motor Driver Module Heat sink for 3D Printer Reprap A4988 surface mount QFN package (ES), the size of 5 mm x 5 mm nominal overall pa