DIGITAL-LCR-METER

Si417发射机的PCB文件以及数据手册、arduino控制si4713的代码文件。(The PCB file of Si417 transmitter and the code file of data manual and Arduino controlling si4713.)

登陆系统、等级评分、分数选择器、计数器、开方五个小程序(number counting 、sqrt、level ranking programs)

步进电机是将电脉冲信号转变为角位移或线位移的开环控制电机，是现代数字程序控制系统中的主要执行元件，应用极为广泛。。在非超载的情况下，电机的转速、停止的位置只取决于脉冲信号的频率和脉冲数，而不受负载变化的影响，当步进驱动器接收到一个脉冲信号，它就驱动步进电机按设定的方向转动一个固定的角度，称为“步距角”，它的旋转是以固定的角度一步一步运行的。可以通过控制脉冲个数来控制角位移量，从而达到准确定位的目的；同时可以通过控制脉冲频率来控制电机转动的速度和加速度，从而达到调速的目的。(Stepper motor is an open loop control motor which transforms electrical pulse signal into angular displacement or linear displacement. It is the main executive element in modern digital control system, and is widely applied. In the case of non overloaded, the motor speed and stop position depends only on the pulse frequency and pulse number, regardless of load changes, when the stepper driver receives a pulse signal, it drives stepper motor to set the direction of rotation of a fixed angle, called "step", it is the rotation of the fixed point of the operation step by step. We can control the angular displacement by controlling the number of pulses, so as to achieve the goal of accurate positioning. At the same time, we can control the speed and acceleration of motor rotation by controlling the pulse frequency, so as to achieve the purpose of speed regulation.)

运用abaqus仿真分析软件，分析CFRP材料裂纹扩展(Using abaqus simulation and analysis software crack propagation analysis CFRP material)

STM32F103+SX1278+WM8974对讲机原理图, 代码(Speex based Lora WalkieTalkie)

atmega1281与lcd3202的接口控制程序，能够完成3202的全部显示功能。(atmega1281 and lcd3202 interface control program, to complete the full 3202 display.)

51单片机中模拟串口的源码,可以拟补单片机中没有串口的缺点(51 microcontroller serial analog source, it can not have intended to fill shortcomings microcontroller serial port)

通过使用STM32F407内部的ADC资源，开发出的一款简易版示波器，能够识别并画出波形，显示频率、幅值等要素，可以调Time ，VPP level等。代码简单易读。(By using ADC resources in STM32F407, a simple version oscilloscope is developed, which can recognize and draw waveforms, display frequency, amplitude and other elements, and adjust time, VPP level, etc. The code is easy to read.)

c8051F040 单片机 DAC调试程序(c8051F040 microcontroller DAC Debugger)

韩国三星320×240LCD LCD模块是一款低价位高品质的LCD模块,具有高分辨率(点为0.27mm×0.27mm)、高对比度FSTN、高可靠性、低功耗、低价格等优点,特别适用于数控机床、PDA、掌上电脑、游戏机等产品。 (South Korea)