Description: The Big Easy Driver, designed by Brian Schmalz, is a stepper motor driver board for bi-polar stepper motors up to a max 2A/phase. It is based on the Allegro A4988 stepper driver chip. It’s the next version of the popular Easy Driver board.
Each Big Easy Driver can drive up to a max of 2A per phase of a bi-polar stepper motor. It is a chopper microstepping driver which defaults to 16 step microstepping mode. It can take a maximum motor drive voltage of around 30V, and includes on-board 5V/3.3V regulation, so only one supply is necessary. Although this board should be able to run most systems without active cooling while operating at 1.4-1.7A/phase, a heatsink is required for loads approaching 2A/phase. You can find the recommended heatsink in the related items below.
Note: This product is a collaboration with Brian Schmalz. A portion of each sales goes back to him for product support and continued development.
Based on 4 ratings:
Using it to drive the 125oz.in SparkFun motor (https://www.sparkfun.com/products/10847) from an Arduino Uno. Easy to assemble, set up, and use. 0 problems. Note though that the driver itself does get hot, depending on the current the motor is sinking. Can still drive this motor fine (didn’t measure current but had enough juice to lift a phone book off the ground, so a few pounds), but for larger motors you may want to get a heatsink.
Very easy to use. All pins are clearly labeled. Set the voltage to 3.3V… connected a microprocessor and wrote a quick control routine. Powered up the unit and adjusted the current up until the motor was stepping. I was able to prototype a project in short order. Thanks.
It works as designed.
Super simple. Using a couple to drive steppers for a white board plotter.