Call-GPRS-experiment

AT89S52键盘程序,这是一个变频器的键盘驱动程序，简单，可靠，芯片为51单片机(one simple progrem for 51,if you like ,you can use it freely.)

USB与51单片机的连接使用，采用PDIUSB12接口芯片(51 single-chip USB connectivity and use, the use of PDIUSB12 interface chip)

用51单片机控制激光测距仪，测出距离并在数码管上显示(MCU control with 51 laser range finder, the distance measured and displayed on digital)

说明：  stm32f1驱动sx1280进行测距，通过oled或串口打印输出距离(Stm32f1 driver sx1280 range, through oled or serial port printing output distance)

根据对应的按键值，对应输出相应的电容值，并做掉电检测(According to the corresponding key value, corresponding to the output of the corresponding capacitance values ​ ​ and do brownout detection)

能从SD卡读取MP3文件，并且识别后通过LD3320播放MP3，具体使用只需新建一个.ini系统文件存在sd卡，在里面设置好关键词并且所需播放的MP3文件即可(Read MP3 files from the SD card through the LD3320 play MP3 and identify specific use simply create a new the ini system files sd card exists inside set keywords and required to play MP3 files can)

说明：  实用教程，单片机编程框架。很详细。初学者可以看看(Practical tutorial, SCM programming framework. Very detailed. Beginners can take a look at it.)

说明：  NAND-FLASH 坏块管理，ECC校验，STM32，嵌入式软件(Bad Block Management)

说明：  1.系统整体设计 系本设计采用STC89C52单片机为主控芯片，结合外围电路矩阵键盘、液晶显示器LCD1602等部分组成,能够实现： 1 DS18B20不断采集周围环境温度； 2． 单片机处理温度的数据显示在DS18B20； 3． 用户设定温度报警的上限和下限；(1. Overall design of the system This design uses STC89C52 single chip microcomputer as the main control chip, combined with peripheral circuit matrix keyboard, liquid crystal display LCD1602 and other parts DS18B20 continuously collects the ambient temperature; 2. The temperature data processed by MCU is displayed in DS18B20; 3. The user sets the upper limit and lower limit of temperature alarm;)

设计的电机驱动控制系统的主要功能有①控制电机的正转、反转；②为电机设计控制速度，有5m/s、10m/s、15m/s三个等级；③给电机设定转动的位移，让电机按照设定的位移移动；④1602液晶上显示电机的位移和速度；⑤利用4*4键盘数字输入控制电机的速度、按键C和D控制正反转、按键B控制三个档位的速度。(Using SCM software and hardware systems to achieve precision stage displacement, velocity through three or four phase stepper motors (motors meet the acceleration and deceleration characteristics), control the direction, location. Completion of the control circuit board hardware, including CPU, power amplifier, buttons, LED display. Software can be implemented in C.)