You must place these files into the root library folder of your Proteus installation. The file path depends on your software version:
Crucially , connect all grounds together (Arduino, A4988, Motor Power). Troubleshooting the Simulation a4988 proteus library
Verify that you copied both the .LIB and .IDX files into the exact active data directory of Proteus, and restarted the application. You must place these files into the root
+---------------------------------------+ | ARDUINO UNO | | | | Digital Pin 3 (PWM/Timer) --------->|--[ STEP ] | Digital Pin 4 --------------------->|--[ DIR ] +---------------------------------------+ | v +-----------------------+ | A4988 DRIVER MODULE | | | [5V Logic] ----->| VDD 1A,1B,2A,2B |---> [Bipolar Stepper] [Logic GND] ---->| GND | (4-Wire Motor) | | [12V-24V DC] --->| VMOT | [Power GND] ---->| GND | +-----------------------+ Step 1: Component Gathering Place a separate DC voltage source for VMOT set to 12V
: Search for MOTOR-STEPPER in Proteus. Choose a 4-wire bipolar stepper motor model. Power Supplies : Place a DC voltage source for VDD set to 5V. Place a separate DC voltage source for VMOT set to 12V. Wiring : Connect Arduino Digital Pin 8 to the STEP pin. Connect Arduino Digital Pin 9 to the DIR pin. Connect RESET and SLEEP pins together on the A4988 model.