This breakout board provides a broad operating range of 7 V to 45 V and microstepping down to 1/256-step for STMicro's STSPIN820 microstepping bipolar stepper motor driver. Without a heat sink or forced air flow, it can continuously deliver up to about 0.9 A per phase (up to 1.5 A peak). The module can be used in many applications as a drop-in replacement for our well-known A4988 carriers because of its pinout and interface, which are very similar. Qualities: Easy-to-use interface for step and direction control Full-step, half-step, 1/4-step, 1/8-step, 1/16-step, 1/32-step, 1/128-step, and 1/256-step are the eight distinct step resolutions down to 256 microsteps. You can set the maximum current output with adjustable current control, allowing you to use voltages above