Connect a POT to the VREF pin to simulate the current limit adjustment.
You can find dedicated simulation models for the A4988 driver at the following sources: a4988 proteus library download exclusive
Engineers who need stepper simulation use either: Connect a POT to the VREF pin to
The A4988 is a micro-stepping driver with a built-in translator. In a simulation environment, this library allows you to: MakerBazar.in Test Microstepping a4988 proteus library download exclusive