ds1302

430 单片机的i2c程序，430有i2c集成(this is an I2C program of 430)

用电脑串口控制单片机流水灯状态,用电脑串口控制单片机流水灯状态(Serial control with a computer chip light water status)

使用kinect传感器对图像的深度距离进行测量(measure depth distance by kinect sensor)

详细介绍了DAC0832产生正弦波的程序(Detailed introduces DAC0832 produce sine wave program)

智能巡检黑线小车的上位机程序源码。stm32开发板用的。(Intelligent patrol car black line the upper computer program source. stm32 development board.)

MC9S12DZ60时钟初始化程序, C语言, code warrior 软件(initial program of MCG, C language，code warrior software)

这是个用矩阵键盘控制步进电机圈数和转速的程序，参数设定在触摸屏上显示(This is a matrix keyboard to control the stepper motor number of turns and speed program parameter settings on the touch screen display)

NRF无线模块程序，用于飞思卡尔智能车无线数据传输(NRF wireless module program for Freescale smart car wireless data transmission)

DMX512灯管控制程序，欢迎使用，，可以换灯光颜色.rar(DMX512 lamp control program, welcome to use, can change the color of light, .Rar)

滤波器广泛应用于数字信号处理、通信、自动控制领域,但设计可变宽频带有源滤波器则比较困难。利用单片机控制参数可编程的双二阶通用开关电容有源滤波器,精确设置有源滤波器的中心频率f，品质因数Q及有源滤波器的工作方式。本系统主要分为两个部分:即程控滤波器和程控放大器。程控放大器电压增益为40dB，通过单片机控制DA进行分压，可精确实现要求的10dB步进，误差小于0.5 ，通带为100Hz-500KHz，输入电压峰－峰值范围为10mV，在输入范围内无明显失真。由MAX264为核心的滤波器，可设置为高通、低通滤波器。通过单片机直接给出控制频率，使-3dB截止频率在1KHz-20KHz内可调，步进1KHz，误差小于1 。整个系统以52单片机为控制核心，电路简单，性能稳定，且具有较高精度，滤波参数调节通过单片机控制，较为方便。(Filters are widely used in digital signal processing, communications, automatic control area, but the design variable wideband active filter is more difficult. Control parameters using single-chip programmable universal switched-capacitor biquad active filter, active filter accurately set the center frequency f, quality factor Q and the active filter works. The system is mainly divided into two parts: the program-controlled filters and programmable amplifiers. Programmable amplifier voltage gain of 40dB, the DA through the partial pressure of single-chip control, can accurately achieve the required 10dB step, the error is less than 0.5 , passband to 100Hz-500KHz, input voltage peak- the range of 10mV, the input range no significant distortion. By the MAX264 as the core of filter can be set to high pass, low pass filter. Given directly by the microcontroller controls the frequency, the-3dB cutoff frequency at 1KHz-20KHz adjustable, step 1KHz, error is less than 1 . The entire system for)