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12864在51上的驱动，可在驱动的基础上改进添加需要的功能。(12864 is driven on 51, which can improve the required functions on the basis of driver.)

使用51单片机实现的超声波测距模块，带有显示，语音报警功能，附有原理图和PCB板(A MCU program using Ultrasonic testing to measure the distant with display and voice alarm function, package with PCB and schematic)

说明：  HR202设计思路及程序电路 AD元件图3D图(Design Thought and Programming Circuit of HR202)

采用STC89C52单片机写的硫酸铜建浴设备控制系统。(STC89C52 MCU write using copper sulfate bath construction equipment control systems.)

基于STM32F407ZET6，软硬件SPI协议读写W25Q128FLASH模块(W25Q128FLASH module read and write based on STM32F407ZET6, software and hardware SPI protocol)

基于430单片机的数字万用表，可以测来量电阻、电流、电压。精确度达0.1 (Based on 430 single chip digital multimeter, can be measured to the amount of resistance, current, voltage. An accuracy of 0.1 )

CC2530 PWM控制，分析的相当详细。(CC2530 PWM control, analysis in considerable detail.)

使用控制BLDC电机成熟方案，在洗衣机上使用年，都比较稳定，目前产品家家户晓。其中包含C语言及对应的PCB原理图，较为难得。(Use BLDC motor control mature solution, in the washing machine using, more stable, at present the product every so famous. Contains C language and the corresponding PCB principle diagram, relatively rare. )

C++ SDK绘图。涉及函数：WinProc Draw(C++ SDK graphics. Related to function: WinProc Draw)

说明：  开发平衡小车的参考资料,内含源码和电路图，可以加速你的开发过程(the reference to develop the balance car)