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A3967 Stepper Motor Driver Module

SKU: B5ZWIIX7XV
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4.5 (138 reviews)
The A3967 Stepper Motor Driver Module is a compact microstepping motor controller designed for driving bipolar stepper motors in robotics, automation, CNC mechanisms, positioning systems, and microcontroller-based motion-control projects. The module is based on the A3967 microstepping driver IC, which integrates dual full-bridge motor drivers, a microstepping translator, PWM current regulation, and protection circuitry. The module simplifies stepper motor control...
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The A3967 Stepper Motor Driver Module is a compact microstepping motor controller designed for driving bipolar stepper motors in robotics, automation, CNC mechanisms, positioning systems, and microcontroller-based motion-control projects. The module is based on the A3967 microstepping driver IC, which integrates dual full-bridge motor drivers, a microstepping translator, PWM current regulation, and protection circuitry.

The module simplifies stepper motor control by using basic STEP and DIR signals. Each pulse applied to the STEP input advances the motor by one selected step increment, while the DIR input controls the direction of rotation. The built-in translator automatically manages the required motor coil current sequence, eliminating the need for complex phase-control programming.

The A3967 supports full-step, half-step, quarter-step, and eighth-step microstepping modes, allowing users to select the required balance between positioning resolution, smoothness, and speed. Common EasyDriver-style modules expose the MS1 and MS2 pins for selecting the microstep resolution.

The driver IC supports motor supply voltages up to 30V and output current up to ±750mA per phase. Common A3967 EasyDriver-style modules are typically operated from approximately 7V to 30V DC and include adjustable current limiting, allowing the motor phase current to be set according to the connected stepper motor.

With its simple control interface, adjustable current regulation, multiple microstepping modes, and built-in protection features, the A3967 module is suitable for Arduino, ESP32, STM32, Raspberry Pi Pico, RP2040, PIC, AVR, and other microcontroller-based motion-control systems.

Key Features

  • Based on the A3967 microstepping motor driver IC
  • Designed for bipolar stepper motors
  • Simple STEP and DIR control interface
  • Built-in microstepping translator
  • Supports full-step operation
  • Supports half-step operation
  • Supports quarter-step operation
  • Supports eighth-step microstepping
  • Adjustable motor phase current
  • Up to ±750mA output current per phase at IC rating
  • Up to 30V motor drive capability at IC rating
  • Common modules support approximately 7V to 30V motor supply
  • 3.0V to 5.5V logic supply range at IC level
  • MS1 and MS2 microstep selection inputs
  • ENABLE control input
  • SLEEP low-power control input
  • RESET control support
  • Fixed off-time PWM current regulation
  • Mixed, fast, and slow current-decay modes
  • Automatic current-decay mode selection
  • Built-in undervoltage lockout
  • Thermal shutdown protection
  • Crossover-current protection
  • Suitable for precision positioning and motion-control applications

Shipping & Returns

Orders placed before 3 PM IST will be shipped on the same day (excluding Sundays and Public holidays) through our shipping partners. In rare cases, the pickup may get delayed during Public holidays / Bandh / Environmental disturbances.

Specifications

Specifications:

Module Type: Microstepping Stepper Motor Driver Module
Driver IC: A3967
Motor Type: Bipolar Stepper Motor
Motor Connection: Two-Phase, 4-Wire Bipolar Output
Compatible Motor Wiring: 4-Wire Bipolar and Suitable 6-Wire or 8-Wire Motors Configured as Bipolar
Motor Supply Voltage: Typically 7V to 30V DC on Common EasyDriver-Style Modules
Maximum IC Output Voltage Rating: 30V
Output Current Range: Commonly Adjustable from Approximately 150mA to 750mA per Phase on EasyDriver-Style Modules
Maximum IC Output Current Rating: ±750mA
Logic Supply Range: 3.0V to 5.5V at IC Level
Control Interface: STEP and DIR
Microstepping Modes: Full, Half, Quarter and Eighth Step
Microstep Selection Pins: MS1 and MS2
Current Regulation: Fixed Off-Time PWM Current Regulation
Current Decay Modes: Slow, Fast and Mixed Decay
Current Adjustment: Onboard Potentiometer on Common Module Versions
Enable Control: Supported
Sleep Mode: Supported
Reset Function: Supported
Undervoltage Lockout: Integrated
Thermal Shutdown: Integrated
Crossover-Current Protection: Integrated
Typical EasyDriver-Style Module Dimensions: Approximately 48mm × 20mm
Control Compatibility: 3.3V and 5V Logic Systems, Depending on Module Configuration
Compatibility: Arduino UNO, Nano, Mega, ESP32, STM32, Raspberry Pi Pico, RP2040, PIC, AVR and Other Digital Controllers.

Additional Resources

Stepper Motor Driver.PDF

FAQ

1. What is the A3967 Stepper Motor Driver Module used for?

The A3967 module is used to control bipolar stepper motors in robotics, CNC prototypes, positioning systems, camera sliders, automation equipment, and other applications requiring accurate motor movement.

2. What microstepping modes are supported by the A3967 driver?

The A3967 supports full-step, half-step, quarter-step, and eighth-step microstepping modes. The step resolution is selected using the MS1 and MS2 control inputs.

3. Can the A3967 module be used with Arduino and ESP32?

Yes. The module can be controlled using simple STEP and DIR signals and can be used with Arduino, ESP32, STM32, Raspberry Pi Pico, RP2040, PIC, AVR, and other compatible controllers.

4. What is the maximum output current of the A3967 driver?

The A3967 IC has an output rating of up to ±750mA per phase. Common EasyDriver-style modules provide adjustable current control, often from approximately 150mA to 750mA per phase.

5. Can the A3967 control a unipolar stepper motor?

The A3967 is designed for bipolar stepper motor operation. Some 6-wire and 8-wire stepper motors can be connected in a bipolar configuration by using the appropriate coil connections, while a standard 5-wire unipolar motor is generally not directly compatible.