This breakout board for Toshiba’s TB67S579FTG microstepping bipolar stepper motor driver is arranged in the popular 16-pin Pololu form factor. It features adjustable current limiting and seven microstep resolutions (down to 1/32-step). Additionally, it dynamically selects an optimal decay mode by monitoring the actual motor current, and it can automatically reduce the driving current below the full amount when the motor is lightly loaded to minimize power and heat. The TB67S579FTG has a wide operating voltage range of 4.5 V to 34 V, and our carrier board can deliver approximately 1.1 A per phase continuously without a heat sink or forced air flow (up to 2 A peak). It features built-in protection against over-current and over-temperature conditions.