Features : 4 digit 7-segment LED display module driven by two serial 74HC595s.4 x surface mount LEDs in a parallel configuration.10K adjustable precision potentiometer.3 x Independent push buttons.
Features : Up to 4 bi-directional DC motors with individual 8-bit speed selection (so, about 0.5% resolution),Up to 2 stepper motors (unipolar or bipolar) with single coil, double coil or interleaved stepping.