c-clock

单脉冲测角法中的三点线性约束法，此方法能很好的抑制主板内干扰。。。。(Monopulse angle measuring method of three linear constraints method, this method can interfere with the inhibitory motherboard. . . .)

PIC16F877A+LFN红外接送头+8位led，超简单的原理做红外实验，保证看了就懂，自主研发的哦！不用在看复杂的原理了(PIC16F877A+ LFN head+ 8 bits infrared shuttle led, the principle of infrared super easy to do the experiment, ensure that saw you ll understand, independent research and development! Don t look at the complex principle)

说明：  本程序主要实现led点阵显示汉字的功能，并能使字体上下或者左右移动(This procedure led dot matrix display to achieve the main function of Chinese characters and fonts can move up and down or left and right)

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)

说明：  第十四届恩智浦智能汽车竞赛信标组openmv阳光算法，只检查动态闪烁的信标灯。(Openmv sunshine algorithm of beacon group in the 14th Enzhipu Intelligent Vehicle Competition only checks dynamic flashing beacon lights.)

采用赛普拉斯公司CY8C34XX 方案，实现13串锂电池包智能管理BMS(BMS schematic for E-BIKE manage 13S lion battery package,using CY8C34XX solution.)

摘要 电能表作为用电量的测量工具广泛的应用于各种场合。在电能表校表系统中,需要的最基本的输入信号源是高精度双路正弦信号源,并要求可对其频率、相位、幅值进行调节,来对电能表进行校准。 基于单片机的程控信号源设计，运用数字调相、数字调幅和数字调频等技术，要求实现相位、幅度、频率的高精度程控调节。本文设计了一种利用锁相环频率合成技术和数字波形合成技术组成的程控低频正弦波信号发生器，并给出了调幅、调频、调相的实用电路，频率调节通过改变8253计数器的分频系数来实现；相位调节由51单片机预置计数器的计数初值来完成，幅度的调整通过改变DAC1210II的参考电压来实现，使频率分辨率达0.01Hz,相位调节精度达0.1°，并介绍电路中的主要芯的功能及使用。输出正弦波频率和幅值的精度高，稳定性好，失真度低，电路简单、可靠、便于程控。 关键词：数字合成信号源；程控；调幅；调频；移相； (Abstract Meter consumption as the size of the measurement tool is widely used in various occasions. In single-phase power meter verify system, the most basic needs of the input signal is the source of two-way high-precision sine signal source, and may request its frequency, phase, amplitude in a certain step to adjust to the imitate of the actual electricity load with a right meter calibration. Design of the programmable signal supply controlled source，which based on the MCU，including digital phase adjustment，distal amplitude adjustment，digital frequency adjustment etc．The system should achieve high quality digital adjustment of phase, amplitude and frequency. This paper describes the use of a PLL frequency synthesizer technology, and digital wave form synthesis technology consisting of program-controlled low-frequency sine wave signal issued devices, and applies the amplitude， frequency， phase of practical circuit. Frequency can be adjusted through a change in the 8253 counter-frequ)

主要介绍串联稳压电源原理及主要的应用电路。(Introduces the principle and the main power supply series application circuit)

这是一个RC522的驱动程序，单片机采用STM32内部含有模块的原理图(This is a RC522 driver, microcontroller using STM32 internal module containing schematics)

51波特率计算，输入波特率能自动算出所需附的初值(51 baud rate calculation, enter the baud rate will automatically calculate the initial value of necessary laws)