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...
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
Resources & Downloads
Guides, code examples, and more
Related Tutorials
Free guides on learn.littlebird.com.au
