Big Easy Driver by Sparkfun

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Product Feature

• Bi-polar Microstepping Driver
• 2A/Phase Max
• Max Motor Drive Voltage: 35V
• On-board 5V/3.3V Regulation

Product Description

The Big Easy Driver, designed by Brian Schmalz, is a stepper motor driver board for bi-polar stepper motors up to 2A/phase. It is based on the Allegro A4983 stepper driver chip. It's the next version of the popular Easy Driver board.Each BigEasyDriver can drive up to about 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 35V, 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, a heatsink is recommended for loads approaching 2A/phase. You can find the recommended heatsink in the related items below.Note: The arrow indicators on the current adjustment potentiometer is backwards. Keep this in mind if you're adjusting the current limits.Note: This product is a collaboration with Brian Schmalz. A portion of each sales goes back to them for product support and continued development.Features:Bi-polar Microstepping Driver2A/Phase MaxMax Motor Drive Voltage: 35VOn-board 5V/3.3V Regulation

Big Easy Driver by Sparkfun Review

This Big Easy Stepper Driver board has the same pin config as the smaller Easy Stepper Driver but it has a larger chip and can drive steppers with upto 2amps. When I first hooked up the Big Easy Driver Board to my Arduino and power, it was not functioning. The power chip was flashing and causing the on board led to flash. I discovered that you have to adjust the current potentiometer, which I did with a tiny screwdriver and it settled down and works great. I'm running a large stepper and this board gets hot but not as hot as the easy stepper driver did. I really like the squarer foot print of the Big Easy Stepper Driver too. There's holes for mounting header pins, or screw terminals. I just soldered wires into it. I recommend it!

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