arduino如何控制多个步进电机

1、如图左上A两孔B两孔，分别接步进电机的四线（同相的两组，一组接A，另一接B），右上接电，右下接arduino的IO口：分别是step，dir，和地

2、arduino uno 有14个数字口除以2，最多能接7个（共地）

3、需要下载库AccelStepper

例如12是step引脚,13是dir引脚

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#include <AccelStepper.h>
AccelStepper ROTA(1,12,13);
ROTA.setMaxSpeed(10000);

ROTA.setAcceleration(3200);

ROTA.setSpeed(8000);
ROTA.runToNewPosition(0);
ROTA.runToNewPosition(step);