The A4988 Driver which includes heat sink, is designed to be a breakout board and is capable of controlling a 4, 6 or 8 wire stepper motor at varying step resolutions. It is one of the most common, simple yet efficient single motor breakout boards.
Max Output Current: 2A
Max Input Voltage: 35V
Step Resolutions - Full Step, Half step, 1/4 Step, 1/8 Step, and 1/16 Step


