processes

水箱水位自动控制系统,通过超声波对水位高度的检测，把数据传入到单片机中处理，得出当前水位，并根据当前水位的高低程度调控直流电机和步进电机转动实现水位的增加或减少，从而实现水位的自动控制。(the system of water auto control )

单片机MC9S08AW60脉宽调制 TPM1CH3 LS2亮度控制 KBI SEG控制亮度等级 。本工程为定时器输出PWM波测试工程实例通过对PWM占空比的调节,实现小灯的渐亮的功能,当占空比为100％时再从0％逐渐增加.PWM的周期一定要足够的快,否则其输出电压的波动范围很大,且测不出一个稳定的电压值,这样通过就观察不到小灯渐亮效果. 另外,在改变PWM的周期和占空比之前和之后要分别禁止和使用。(MC9S08AW60 pulse width modulation TPM1CH3 LS2 brightness control KBI SEG brightness level. This project is an example of testing the output PWM wave of the timer. By adjusting the duty ratio of the PWM, the function of the small lamp gradually brightening is realized. When the duty ratio is 100%, the period of the small lamp gradually increases from 0%. The period of the PWM must be fast enough. Otherwise, the fluctuation range of the output voltage is large and a stable voltage value can not be measured, so the effect of the gradual brightening of the small lamp can not be observed. In addition, the period of the PWM is changed. Before and after duty cycle should be prohibited and used separately.)

说明：  用于arduino单片机驱动错误的修复。如电脑无法识别。或被电脑识别为usb设别而非串口。(t is used to repair driving errors of Arduino single chip computer. If the computer can not recognize. Or it can be recognized as a USB device rather than a serial port by a computer.)

串口通讯232，接受上位机发出的指令来控制一个继电器的开关状态(Serial communication 232, to accept the instructions issued by the host computer to control a relay switch state)

故障录波器及继电保护故障信息系统技术培训(Fault recorder and relay protection fault information system technical training )

说明：  ATK-HC05蓝牙串口模块的使用，实现蓝牙串口通信(Using ATK-HC05 Bluetooth Serial Port Module to Realize Bluetooth Serial Port Communication)

基于51单片机实现倒车雷达测距系统，可直接在keil上编译生成.hex文件然后下载到单片机上运行(achieving a reversing radar ranging system based on 51 MCU,you can compile the .c file on keil software and you will get a .hex file,which should downloaded into the 51MCU and the system can operate well)

Empty activity, not needed for this test.

TI BeagleBoard-XM的開機映像檔，將其解壓縮後，執行其中的sh檔即可自動將你的uSD卡格式化並安置好開機映像檔，其中包含一個readme文檔，可參照其方式執行。(TI BeagleBoard-XM s boot images,uncompress it and execute the .sh file then it can automatically format your uSD card and make install the boot images in it.There is a readme file included and can be followed.)

stm8系列单片机，控制八位数码管按键计数(stm8 series microcontrollers, digital control buttons eight counts)