1、本程序用于测试4相步进电机常规驱动

2、需要用跳帽或者杜邦线把信号输出端和对应的步进电机信号输入端连接起来

3、速度不可以调节的过快，不然就没有力矩转动了

　　　　4、按s4（设置成独立按键模式）可以控制正反转 -1, the procedure used to test the conventional 4-phase stepper motor driver 2, need to use DuPont wire jumper or the signal output and the corresponding stepper motor connected signal input 3, the speed can not adjust too quickly, or else No moment of rotation 4, by s4 (set to the independent button mode) to control the reversing