2018/12/19 · Arguments are a list with the 4 pins (Coil_A1, Coil_A2, Coil_B1, Coil_B2), the delay between steps (default = 20ms) and verbose to display reports on the motor movements, the last two are optional. e.g: import RPistepper as stp M1_pins = [17, 27, 10, 9] with stp.