为了满足当前监控领域中对高速、高精度球形摄像机的大量需求,提出了基于MSP430 单片机及两相步进电机细分驱动芯片A3977 的球形摄像机云台控制系统实现方案,并详细阐述了系统组成结构、软硬件设计。实践结果表明该系统具有调速范围宽、定位精度高、成本低及可靠性好等优点,具有良好的市场应用前景。 关键词:MSP430 单片机;云台控制;步进电机 Abstract: In order to satisfy the great demands of high speed and high precision dome cameras in monitoring systems, the design and implementation of the dome camera pan-tilt control system is introduced, which is based on the MSP430 MCU and A3977. Meanwhile, the software andhardware design is presented in detail. The results show that this system has many advantages, such as high speed, high precision, low cost and stable. So it will have the good market application prospect. Keywords: MSP430 MCU; Pan-tilt Control; Stepper Motor