Quick Answer
Choose the HR4988 for 3D printer or CNC builds that need StepStick-compatible wiring and precise microstepping. Choose the A3967 EasyDriver module when you want a simpler, standalone driver for Arduino projects with 4, 6, or 8-wire bipolar steppers.
Why the HR4988 Fits 3D Printers and CNC Machines
The HR4988 module is based on the HR4988 stepper driver and is designed for applications like 3D printers and CNC machines where precise stepper control matters. Its pinout is compatible with the StepStick design, which means it can drop into common RAMPS shields and other RepRap-style boards without extra wiring.
If you are upgrading or repairing a printer or CNC controller, the HR4988 is a practical replacement because it follows the same footprint and pin mapping you likely already have. That compatibility saves time and reduces the chance of wiring errors.
Why the A3967 Is a Good Fit for Arduino Projects
The A3967 module is EasyDriver compatible and uses the Allegro A3967SLB microstepping driver. It is meant to drive bipolar motors, including motors wired as bipolar, such as 4, 6, or 8-wire steppers, directly from a microcontroller.
This module is a good match for standalone Arduino projects where you want a compact driver without needing a shield or a separate carrier board. Its default 5V TTL logic input simplifies hooking it up to common microcontrollers.
The A3967's EasyDriver compatibility also means you can follow the many existing tutorials and wiring diagrams for EasyDriver modules, which can speed up your build.
HR4988 vs A3967: Trade-Offs at a Glance
- Wiring and compatibility: The HR4988 uses the StepStick pinout, so it fits RAMPS and RepRap shields. The A3967 is EasyDriver compatible, which is more common in standalone Arduino tutorials. Check your existing board or shield before choosing; this is the biggest wiring difference.
- Motor support: The A3967 explicitly supports 4, 6, or 8-wire steppers wired as bipolar. The HR4988 is aimed at precise stepper control in 3D printers and CNC machines, but its exact motor wire support is not specified in the catalog. If you have a 6 or 8-wire motor, the A3967 is the safer documented choice.
- Logic level: The A3967 accepts 5V TTL by default, which matches most Arduino boards. The HR4988's logic level is not stated in the catalog, so verify your controller's output voltage. For a 5V Arduino project, the A3967 is more plug-and-play; for a 3D printer board, the HR4988 is designed for that ecosystem.
Product Facts
-
Stepper Motor Driver HR4988: This module is based on the HR4988 stepper motor driver and is ideal for 3D printer, CNC, and other applications requiring precise stepper control. Its pinout is compatible with the StepStick design. If you already use RAMPS or other StepStick-compatible boards, the HR4988 can be a drop-in replacement without rewiring.
Stepper Motor Driver HR4988
-
A3967 Stepper Motor driver Module: This EasyDriver compatible module uses the Allegro A3967SLB microstepping driver and can drive 4, 6, or 8-wire stepper motors wired as bipolar from a microcontroller. By default it accepts 5V TTL logic. The A3967 is a straightforward choice for Arduino or other 5V logic projects where you want to control a bipolar stepper directly without a shield.
A3967 Stepper Motor driver Module
Which Driver Should You Choose?
Best for
- 3D printer and CNC builds that use RAMPS or other StepStick-compatible shields, where the HR4988's drop-in design saves wiring effort.
- Projects that need precise stepper control and already follow the StepStick pinout convention.
Not for
- Standalone Arduino projects using 6 or 8-wire bipolar steppers, where the A3967's documented motor support and 5V TTL logic make it a simpler choice.