SparkFun
Big Easy Driver
The Big Easy Driver is a stepper motor driver board for bipolar stepper motors up to 2 A per phase, based on the Allegro A4988 driver chip. Designed by Brian...
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The Big Easy Driver is a stepper motor driver board for bipolar stepper motors up to 2 A per phase, based on the Allegro A4988 driver chip. Designed by Brian Schmalz, it's the successor to the popular Easy Driver board.
It defaults to 16-step microstepping mode and includes onboard 5 V and 3.3 V voltage regulators, so only a single motor supply is needed. Accepts motor drive voltages up to 30 V.
Specifications
- Driver Chip – Allegro A4988
- Max Current – 2 A/phase
- Without Heatsink – 1.4–1.7 A/phase
- Max Motor Voltage – 30 V
- Microstepping – Up to 1/16 step (default)
- Onboard Regulation – 5 V and 3.3 V
- Motor Type – Bipolar stepper
Key Features
- Single Supply – Onboard regulators eliminate need for separate logic power
- Chopper Driver – Efficient current regulation
- Configurable Microstepping – Full, half, quarter, eighth, and sixteenth step
Ideal For
- CNC machines and 3D printers
- Camera sliders and pan/tilt systems
- Robotics and automation
- Any project requiring precise stepper motor control
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- motor driver
- An electronic circuit that lets a low-power controller switch and control a motor that needs more current than the controller pins can safely provide. Checking motor driver support matters because pumps and motors usually cannot be connected directly to a microcontroller output.
Find this product in
Robotics & Motion
Big Easy Driver Schematic
Schematic · 43.6 KB · Click any page to view full size
A4988 Datasheet
Datasheet · 382.5 KB · Click any page to view full size
Supplier page — sparkfun.com
Supplier Description · 638.8 KB · Click any page to view full size
42BYGHM809
Datasheet · 41.2 KB · Click any page to view full size
Resources & Downloads
Guides, code examples, and more
Source Code
Open-source libraries, firmware & example projects for this product
The Big Easy Driver available from SparkFun Electronics
675d8df
about 7 years ago
· 49 commits
- Firmware Update SparkFun_Big_Easy_Driver_Basic_Demo.ino about 7 years ago
- Hardware Fixing typo in schematic note to proper screw terminal size over 9 years ago
- Production_Files created panels v16a over 11 years ago
- .gitignore Added Gitignore about 13 years ago
- README.md Added example sketches from Easy Driver Examples webpage, and added notes to readme.md about SparkFun hookup guide and Easy Driver Example sketches. over 11 years ago
Related Tutorials
Free guides on learn.littlebird.com.au
