Several modes of Bluetooth devices
1. I don't understand the different modes of Bluetooth devices. For example, in slave mode, after turning on, it waits for a mobile phone or other terminal device to...
[p=24, null, left][color=rgb(51, 51, 51)][font=Tahoma, Arial, sans-serif] In order to save energy and electricity, LED has been widely promoted, but LED needs a power supply, the quality of which will...
All the netizens from Tianjin in the forum, please come and report. I saw the accident report in Tianjin on my WeChat Moments this morning and was shocked and heartbroken! I pray for the injured, thei...
Make a server on the PC and a client under WinCE system. What technology should be used to implement each end? The functions supported by the client are: 1. Search server files 2. User registration 3....
Wang Xiaochuan, the "Wudaokou Goalkeeper", is going through a level that he has never gone through before. For example, Sogou's (NYSE: SOGO) financial report, artificial intelligence, and the futur...[Details]
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]
When Amazon launched its first
cloud computing
service, the outside world was not optimistic about this direction, as it had high investment, low profits and many uncertainties. Let's follo...[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]
I used STM32CubeMX V4.22.1 to generate a project including EHT and Lwip. The debugging has been abnormal. After careful inspection, the following problems were found: 1. The hardware uses LAN8720A, b...[Details]
This is my first time writing an STM32 program. I have many questions to ask. I want to convert the data of the SO of MAX6675 into the actual temperature and read it out using the serial port tool. I...[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]
This small program is still the use of timer, which is relatively simple. The specific parts are noted in the comments, please refer to the comments. /*********************************************...[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]
How to convert the pin voltage value into V using the built-in ADC of STM32? V(ADC) = Value(ADC) * V(ref)/4096 (The ADC of STM32 is 12 bits, so the maximum value of the AD word is 4096)
Where V(ADC...[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]
MSP430 MCU 1602 LCD 60-second timing program //************************************************************** // P3BIT5 connects to RS)-- (BIT7 connects to NE)-- (BIT6 connects to RW) //P4 port sends...[Details]
On June 26, 2017, China's new generation of high-speed rail "Fuxing" realized its first two-way service between Shanghai and Beijing, with a maximum speed of 400 kilometers per hour and a standard ...[Details]
In the first quarter of 2014, Inspur's
server
shipment market share reached 19%, ranking first in China and fifth in the global market. This is the first time a Chinese manufacturer has ach...[Details]
On the 25th, Qualcomm held a technology summit in Beijing, inviting almost all important Chinese partners in an extremely rare "show", including SMIC, China Mobile, Lenovo, Xiaomi, OPPO, vivo, ZTE ...[Details]