18B20

51单片机SCMrtoss源代码，非常好用的能够移植 (51 the microcontroller SCMrtoss source code, very useful to be able to transplant)

利用Easy5509开发板的TMS320_5509A芯片开发的12864中文液晶驱动程序，可以实现图形显示和中文字符显示两种模式的驱动。液晶管脚的驱动方式是通过访问EMIF外部地址驱动外部CPLD实现。(On the platform of TMS320_5509A DSP chip to write the driver function of 12864 Chinese Character LCD. The project can realize the 2 driver models of 12864LCD.The LCD bin control is implemented by the way of write the external memory interface address to transmit the signal to LCD through a CPLD chip.)

基于51单片机PWM控制LED灯渐亮渐灭实验(Based on 51 MCU PWM control of LED lights getting brighter gradually eliminate experimental)

给今年参加合泰杯比赛同学HT66FU50定时器源码(To participate in this year' s Cup of Thailand classmates HT66FU50 timer source)

说明：  PWM输入+DMA，亲测可用，有需要的朋友可以自行下载。(PWM input + DMA, pro-test available.)

Wiegand 26/34转RS485、RS232信号转换模块（原理图+PCB+BOM）,输入韦根信号，转换为串口输出(Wiegand 26/34 to RS485, RS232 signal conversion module (schematic + PCB + BOM), input Wiegand signal, converted to serial output)

在STM32开发平台下，通过定时器的时钟配置，进行的PWM互补带死区的方波对电机进行控制。(Under the STM32 development platform, the PWM complementary square wave with dead zone is used to control the motor through the clock configuration of the timer.)

基于STM32F1的RFID M1卡的读写程序，RFID芯片是NXP的RC522(Based on STM32F1 RFID M1 card reader program, RFID chip is NXP s RC522)

transfer file using sound card

51单片机LED流星雨灯，原理： 利用PWM来模似流星雨：将亮度等级分为8个 ，通过改变每一组LED的亮度来达到流星雨效果。因为流星雨是前面亮后面越来越暗，就像一条龙一样，拖着尾巴过来。(51 single LED meteor light, principle: the use PWM to die like a meteor shower: The brightness level is divided into eight, each group by changing the brightness of the LED to achieve the effect of the meteor shower. Because meteor shower is getting back in front of bright dark, like one-stop, like dragging tail over.)