# Big Easy Driver

**Type:** Product page · **SKU:** ROB-12859 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/big-easy-driver-11779.html ([markdown](https://core-electronics.com.au/big-easy-driver-11779.html.md))

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.

## Pricing

- **Price:** $35.60 (inc GST) — $32.36 AUD, exc GST
- **Quantity discounts:** 5+ $31.39 (exc GST) · 25+ $30.75 (exc GST) · 100+ $29.45 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 31 and Sep 04.

## 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](https://core-electronics.com.au/search/?q=11510) is required for loads approaching 2A/phase, check the recommended essentials for a suitable heatsink.

Note: This product is a collaboration with Brian Schmalz. A portion of each sales goes back to him for product support and continued development.

Features:

- Bi-polar Microstepping Driver
- 2A/Phase Max
- 1.4-1.7A/Phase w/o Heatsink
- Max Motor Drive Voltage: 30V
- On-board 5V/3.3V Regulation
 
Documents:

- [Schematic](https://core-electronics.com.au/attachments/localcontent/BigEasyDriver_v16_107426bb8ed.pdf)
- [Eagle Files](https://core-electronics.com.au/attachments/localcontent/BigEasyDriver_v16_20280379eb6.zip)
- [Hookup Guide](https://learn.sparkfun.com/tutorials/big-easy-driver-hookup-guide)
- [Datasheet](https://core-electronics.com.au/attachments/localcontent/A4988-Datasheet_391630cd512.pdf) (A4988)
- Design Site
- [GitHub](https://github.com/sparkfun/Big_Easy_Driver/tree/Hw-v1.6_Fw-v1.0)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/r/o/rob-12859.jpg)