HI Marco
please use StepperRun(100); here is the cpp file <LINK_TEXT text=“https://github.com/Seeed-Studio/Grove_I … r.cpp#L149”>https://github.com/Seeed-Studio/Grove_I2C_Motor_Driver_v1_3/blob/master/Grove_I2C_Motor_Driver.cpp#L149</LINK_TEXT>. we tested it and it works well. please let us know if it still does not work. thanks.
Seeed techsupport team
Bill