可以实现与STM32F4的通信，可以实现各种姿态控制多个步进电机，如正转，反转，间歇转，转一定的时间停止，停一定的时间，继续转，经多天实践，通信时间久，稳定性强。这是蓝牙的主机，stm32作为主机，控制步进电机。-STM32F4 can communicate with, you can achieve all kinds of gestures to control multiple stepper motors, such as forward, reverse, intermittent turn, turn a certain time to stop, to stop some time, continue to turn, the multi-day practice, communication time long, strong stability. This is a Bluetooth host, stm32 as the host, stepper motor control.