Big Easy Driver – Stepper Motor Driver Board

Big Easy Driver – Stepper Motor Driver Board

SparkFun | A-000000-01892

A new and improved version of the Easy Driver board, the Big Easy Driver by SparkFun can drive bipolar stepper motors at up to 2 amps per phase.

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Size Chart
Size Chart

Big Easy Driver by SparkFun: your 16 step microstepping motor driver

This Big Easy Driver stepper motor driver is based on the Allegro A4988 chip, a bipolar stepper motor driver capable of handling up to 2A/phase. Its settings default to 16 step microstepping mode.

Your bipolar stepper motor driver includes 3.3/5V regulation, you therefore need just one supply.

Points to note when using the Big Easy Driver

The Big Easy Driver can easily manage 1.4 to 1.7A/phase. However, if the load begins to approach 2A, you’ll need to get your hands on a heat sink to eliminate all risk of overheating.

Big Easy Driver Technical schematic

Technical specifications of the Big Easy Driver by SparkFun

  • Bipolar microstepping driver
  • 2A/phase max.
  • 1.4–1.7A/phase without heat sink
  • Max. motor drive voltage: 30V
  • On-board 5V/3.3V regulation


Resources for the Big Easy Driver

You’ll find all the information you need for using your Big Easy Driver correctly below:

Data sheet
Number of channels
Max amps per channel
0,5-3 A max.
With STO
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