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1. Principle 1. Infrared emission protocol There are many infrared communication protocols. This experiment uses the NEC protocol. This protocol uses PWM modulation and uses pulse width to represen...[Details]

Today, under the guidance of a low-level expert, I learned how to configure the PWM module! Woof! First open the file configured last time, as follows:  Then, we need to use TIM1 to set PWM:  Then,...[Details]

China Energy Storage Network: At the Boao Forum, Zhu Min, the current dean of the National Institute of Finance at Tsinghua University, said: "When talking about blockchain, we must first sep...[Details]

Superconductors have physical properties such as zero resistance effect, Meissner effect and Josephson effect, which make them have broad application prospects and unparalleled advantages in many b...[Details]

Household photovoltaic power stations mainly utilize idle resources on existing household buildings, such as roofs, wall facades, balconies, courtyards, etc., to install and use distributed photovo...[Details]

Use the STM32 timer input capture module to control 3-way ultrasonic sensors. The  ultrasonic sensor used this time is the common HC-SR04, which is often used in the obstacle avoidance system of smal...[Details]

Assume that the MCS-51 microcontroller uses a 12MHz crystal oscillator, and wants to use a timer to generate a pulse with a duty cycle of about 30% and a period of 60ms at port P1.0. ;==============...[Details]

Use P1.0 to output 1KHz and 500Hz audio signals to drive the speaker as an alarm signal. It is required that the 1KHz signal sound for 100ms and the 500Hz signal sound for 200ms, alternating between...[Details]

Recently, the National Development and Reform Commission announced that all foreign equity restrictions in the automobile industry will be lifted in the next five years. At the same time, as subsid...[Details]

Semiconductor giant Intel has launched the desktop version of the 8th generation Coffee Lake architecture Core processor more than a month ago, and its performance is said to be 30% to 40% ...[Details]

**File name: ds18b20.c   **Description: Use the single bus DS18B20 temperature measurement program and display it on the LCD, taking three effective decimal places. Two integer parts. A total of 5 di...[Details]

According to data released by WitsView, among the top six TV panel companies in 2017, Samsung 's TV panel production capacity declined the fastest, reaching -15.4%. However, this does not m...[Details]

Recently, the 2017 Review and 2018 Outlook Seminar of the Photovoltaic Industry was held in Beijing. Sungrow, a powerful inverter technology company, was invited to attend the seminar. With 20 year...[Details]

;Equal- period pulse width modulation PWM ; Crystal oscillator : 12M Hz ;89C51 P_PWM1 EQU P1.0 cycle EQU 1000 ;PWM cycle (in microseconds), the frequency is 1000 Hz cycle_high EQU 500 ; The time...[Details]

China Energy Storage Network News: Today, Baidu and China Southern Power Grid Guangdong Company signed a strategic cooperation framework agreement in Guangzhou and will jointly implement the ...[Details]