编写步进电机驱动程序 有了上面的驱动电路，可以方便地写出单片机控制步进电机的驱动程序-The preparation of Stepper Motor Driver with the above drive circuit, can easily write a single-chip stepper motor control driver

详细分析了电动自行车电机控制器电路原理图-control

proteus基于单片机的步进电机仿真电路原理图-proteus-based single-chip stepper motor simulation circuit schematic diagram