Hello friends, I hope you all are doing great. Today, I am going to share the new A4988 / DRV8825 Stepper Driver Library for Proteus V1.0 . These two tiny boards, the green A4988 and the purple DRV8825, drive the stepper motors of almost every 3D printer, laser engraver and hobby CNC machine. Two Arduino pins, STEP and DIR, are all they need, and they split every step of the motor into as many as 32 microsteps for a smooth, quiet motion. Now they are ready for your Proteus simulations, together with a NEMA 17 stepper motor that carries a dial on its shaft, so you can watch every step. Behind the boards sits our own model of the A4988 and the DRV8825 : the translator with its microstep tables, EN, SLEEP and RESET, the current limit set by VREF, and a chopper that pushes the coil currents on ...