This product is a carrier board or breakout board for Allegro's A4988 DMOS Microstepping Driver with Translator and Over-current Protection and widely used in 3D printers and small CNC machines.
key features:
Simple step and direction control interface.
5 different step resolutions: full-step,1/2-step, 1/4-step, 1/8-step, and 1/16-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,ground fault 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.
