A3967 Stepper Motor Driver IC Board – Full/Half-Step Bipolar Control Module

Description

• This is A3967 Stepper Motor Driver
• This is compatible with 4, 6 and 8 wire stepper motors of any voltage
• This stepper motor driver is easy to interface with Arduino
• Adjustable current control from 150 mA or phase to 700 mA or phase
• Male header pins are supplied to use with breadboard

The Easy Driver is designed by Brian Schmalz, and is designed around the A3967 IC. This IC enables you to drive bipolar stepper motors that are 4, 6, or 8-wire configurations. The board can either work with 3.3V or 5V systems, making it extremely versatile. Two mounting holes on-board give the user the option to mechanically stabilize the Easy Driver.

Coil A+ – H-Bridge 2 Output A. Half of connection point for bi-polar stepper motor coil A.
Coil A- – H-Bridge 2 Output B. Half of connection point for bi-polar stepper motor coil A.
Coil B+ – H-Bridge 1 Output A. Half of connection point for bi-polar stepper motor coil B.
Coil B- – H-Bridge 1 Output B. Half of connection point for bi-polar stepper motor coil B.
PFD – Voltage input that selects output current decay mode. If PFD > 0.6Vcc, slow decay mode is activated. If PFD < 0.21Vcc, fast decay mode is activated. Mixed decay occurs at 0.21Vcc< PFD < 0.6Vcc.
RST – Logic Input. When set LOW, all STEP commands are ignored and all FET functionality is turned off. Must be pulled HIGH to enable STEP control.
ENABLE -Logic Input. Enables the FET functionality within the motor driver. If set to HIGH, the FETs will be disabled, and the IC will not drive the motor. If set to LOW, all FETs will be enabled, allowing motor control.
MS2 -Logic Input. See truth table below for HIGH/LOW functionality.
GND – Ground.
M+ – Power Supply. 6-30V, 2A supply.

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