(+5V for logic, +12V or higher for the motor) Ground terminals Pin Connections Diagram Connected To VDD +5V Power Supply Powers internal driver logic GND (Logic) Arduino GND / System GND Logic ground reference VMOT +12V to +24V DC Supply Powers the motor coils GND (Power) Power Supply Ground High-current ground return STEP Arduino Digital Pin 3 Receives step pulses DIR Arduino Digital Pin 4 Sets rotation direction SLP & RST Connected to each other Disables sleep mode 1A, 1B Stepper Motor Coil 1 Output phase A 2A, 2B Stepper Motor Coil 2 Output phase B
: Connections for the four wires of a bipolar stepper motor. 💡 Simulation Tips a4988 proteus library
Connect to the second coil phase of your bipolar stepper motor. Writing a Simple Arduino Test Code (+5V for logic, +12V or higher for the
If clicking play produces a popup stating "No model specified for A4988," your .LIB or .IDX file is corrupted, or Proteus cannot access its simulation engine data. Ensure both files were placed together in the root LIBRARY folder and that you completely restarted the software. Conclusion Ensure both files were placed together in the