VB--PIC

this .rar contain source code in basic for avr microcontroller for making drifter device to measure water velocity on the sea surface

SIM900开发板配套STM32 GPRS代码(SIM900 STM32 GPRS driver)

For this project you need a 3.7v power supply that prepared by LM317 regulator. So you need MAX232 for connect uart to pc .my AVR chip project is Mega8 that you can program on any Avr chip have 2kbyte rom. In bascom spi hardware don’t work correct, so I have to software spi ,but the software spi configure have low speed into hardware spi.

本方案是基于富士通高可靠性单片机开发的锂电池电动螺丝刀，采用直流无刷电机作为核心，配合方波驱动以及闭环控制技术，实现电动工具的可靠运行。 技术参数 1）采用日本富士通MCU，性能稳定，抗干扰强，高可靠性； 2）直流18V输入（可兼容不同锂电池10V—36V）； 3）三相霍尔直流无刷电机驱动，转速高达25000转/分； 4）采用德国英飞凌高性能MOS/IGBT，驱动功率高达800W； 5）高亮LED照明，工作时点亮，不工作时自动熄灭； 6）采用智能控制技术实现待机（不工作时）功耗为 0 消耗； 7）通过软件实现软启动，启动时间可调整，瞬间（1S）达最高速； 8）具有过流保护、堵转保护、过压欠压保护； 9）带速度设置按键、正反转按键、调速开关； (The program is based on the Fujitsu MCU development of high reliability lithium battery electric screwdriver, brushless DC motor as the core, with the square wave drive and closed-loop control technology, power tools for reliable operation.)

很好的一个永磁同步电机的控制仿真模型，自己的参考。(Good control of a permanent magnet synchronous motor simulation model of their own reference.)

说明：  时钟芯片PCF8563 C51程序，本人测试通过(Clock chip PCF8563 C51 program, I test through)

说明：  HT32F1755单片机基础程序,LCD,延时，定时器等等(HT32F1755 microcontroller-based program, LCD, delay, timers, etc.)

伺服电机控制系统，02年开始积累，效果好，速度快，PI控制，经典控制，fuzzy PID，自适应控制，速度位置控制等等，欢迎大家参考。(Servo motor control system, in 2002 began to accumulate, effective, fast, PI control, classical control, fuzzy PID, adaptive control, speed position control, etc., we welcome the reference.)

有限差分波动方程不加边界条件二阶正演时间切片程序。(Finite difference wave equation without boundary conditions of second-order forward time-slicing procedure.)

国外PLC设计的原理图和PCB(Principle foreign PLC design and PCB)