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Steppermotrcontrolkeypositive
- 用4个按键控制4线两相步进电机正反转,加速减速P1口第四位通过l298驱动连接步进电机的4线-4 button control with 4-wire positive two-phase stepper motor to accelerate the slowdown in the fourth through the P1 port connection l298 stepper motor-driven 4-wire