Sparkfun EasyDriver - Stepper Motor Driver

The EasyDriver - Stepper Motor Driver is a user-friendly device for controlling stepper motors. It's compatible with any device that can emit a digital pulse ranging from 0 to 5V, or 0 to 3.3V if you solder SJ2 closed on the EasyDriver. The device needs a power supply ranging from 6V to 30V to operate the motor and can power any voltage of stepper motor. The EasyDriver features an onboard voltage regulator for the digital interface that can be set to 5V or 3.3V. Just connect a 4-wire stepper motor and a microcontroller, and you have precision motor control! The EasyDriver is suitable for bi-polar motors and motors wired as bi-polar, such as 4, 6, or 8 wire stepper motors.The EasyDriver V4.5, co-designed with Brian Schmalz, offers enhanced flexibility and control over your stepper motor compared to older versions. The microstep select (MS1 and MS2) pins of the A3967 are broken out, allowing for adjustments to the microstepping resolution. The sleep and enable pins are also broken out for additional control.Please note that you should not connect or disconnect a motor while the driver is energized as this may cause irreversible damage to the A3967 IC. The product is a result of a collaboration with Brian Schmalz, with a portion of each sale going back to them for product support and continued development.The EasyDriver features an A3967 Microstepping Driver and MS1 and MS2 pins broken out to change microstepping resolution to full, half, quarter and eighth steps (defaults to eighth). It is compatible with 4, 6, and 8 wire stepper motors of any voltage and offers adjustable current control from 150mA/phase to 700mA/phase. The power supply range is from 6V to 30V, with higher voltages providing higher torque at high speeds.Supplementary documentation includes the Schematic, Eagle Files, Hookup Guide, Datasheet (A3967), EasyDriver Website, an Example Arduino Tutorial in Portuguese, and GitHub.