PWM

超声波测距（5 28线性处理）,测量线性度很高(Ultrasonic Ranging (528 linear processing), high linearity measurements)

蜂鸣器发生实验，c语言编写，内容为音乐梁祝，蜂鸣器电路可以自制。(the speaker code )

说明：  跳绳测试仪程序，基于STC单片机开发设计，精度高(Rope skipping tester program, based on STC microcontroller development design, high precision)

stepper motor example with proteus

说明：  利用温度控制制冷设备运行，实现空调扇自动制冷(Using temperature control refrigeration equipment to realize automatic refrigeration of air conditioning fan)

说明：  北京宁河电子提供的单片机驱动台湾群创的彩色TFT屏(Beijing Ninghe Singlechip drive electronics provide Taiwan Innolux color TFT screen)

dq变换法程序,用于电能质量的监测和有功电流或无功电流的计算等。(dq transform procedures for power quality monitoring and active current or reactive current calculation.)

四旋翼飞行器实验室PX4FLOW光流传感器的安装说明，以及调试，适合新手入门。(Four rotor aircraft laboratory PX4FLOW optical flow sensor installation instructions, and debug, suitable for beginners entry.)

编制MCS-51程序使步进电机按照规定的转速和方向进行旋转，并将已转动的步数显示在数码管上。 　　步进电机的转速分为两档，当按下S1开关时，加速旋转，速度从10转/分加速到60转/分。当松开开关时，减速旋转，速度恢复为10转/分。当按下S2开关时，按照逆时针旋转；当松开时，按照顺时针旋转。 　　本程序要求使用定时器中断来实现，不准使用程序延时的方式。(The MCS-51 program is programmed to rotate the stepper motor according to the specified speed and direction, and the number of steps that have been rotated is displayed on the digital tube. Stepper motor speed is divided into two gears. When the S1 switch is pressed, the speed is accelerated from 10 rpm to 60 rpm. When the switch is loosened, the speed will be reduced to 10 rpm. When pressing the S2 switch, rotate counterclockwise; when loosening, rotate clockwise. This procedure requires the use of timer interrupt to achieve, do not use the way of program delay.)

鼎科驱动板RTD2483 HDMI液晶屏程序(Dinke RTD2483 series HDMI LCD firmware)