Scrapy can collect data directly through HTTP requests. The scrapy crawler framework does not provide page js rendering services, so we cannot get information, so we need a rendering engine to provide...
[i=s]This post was last edited by qwqwqw2088 on 2021-5-6 08:19[/i]When I first started using desktop computers, I took them apart and looked at the complex motherboards filled with various slots, chip...
[i=s]This post was last edited by wuguangtao on 2020-12-24 08:41[/i] # MSP430F5529 drives 2.2-inch TFT color screen and implements Snake**Snake**, a timeless little game. When I was an undergraduate, ...
1. InterruptionPIE is a peripheral interrupt expansion module, with a total of 96 interrupts after expansion2. Clock28027 series peripheral support3. Watchdog...
[i=s]This post was last edited by donghailao on 2021-11-24 18:04[/i]In order to train students' creative thinking, the teacher gave a thinking question....
A simple square wave signal generator that can adjust the frequency with one button. The LED lights up when the frequency is out of range. The frequency range is 100-1000hz.
#include reg52.hsbit PWMOU...
On May 20, Yi Guang Technology's "4.5th Generation Organic Light-Emitting Device (OLED) Industrialization" project entered the piling stage. It is reported that the project is located in Xiangshan ...[Details]
The next phase of this technology is to continually test and improve the technology used to deploy these self-driving cars. Obviously, testing is needed to prove that they are safe in any and all r...[Details]
As a general test and measurement instrument, oscilloscopes play an important role in applications in the fields of communications, industrial automation, education, computers, national defense, ae...[Details]
Quectel, the world's leading provider of Internet of Things and Internet of Vehicles solutions, today announced the official release of its next-generation cellular vehicle-to-everything (C-V2X) modu...[Details]
As the first domestic manufacturer to develop its own ICC smart chassis domain controller, Weilai equipped ET7 with ICC as early as 2021 when it was released. It can comprehensively design and adjust...[Details]
The SD card was jointly developed by Japan's Panasonic , Toshiba and the United States ' SanDisk in August 1999.
The structure of SD card can ensure the security of digital file transmission and it i...[Details]
On September 19, the "Key Technologies, Complete Equipment and Engineering Applications of Flexible Substations" passed the technical appraisal of the Chinese Society of Electrical Engineering. Exp...[Details]
0 Introduction Gas flow standard devices are flow standard devices that can provide accurate value transfer for various types of gas flow meters. According to their working principles, they are mainl...[Details]
Load Sensing Solid State Switches
When this thyristor circuit senses that current is flowing through SOL-a, it activates the device plugged into SOL-b. The value of the resistor must be ch...[Details]
Intelligent control technology of LED landscape lighting belongs to the field of analog or digital technology, or microcomputer control technology, most of which are compact or embedded systems. Featu...[Details]
When visiting one of our SDA customers, we found this problem again: the ground of the oscilloscope was not directly connected to the ground of the object under test. When using the AC range of the m...[Details]
1. What is pin multiplexing? STM32F4 has many built-in peripherals, and the external pins of these peripherals are multiplexed with GPIO. In other words, if a GPIO can be multiplexed as a function ...[Details]
VC Functional Safety Manager integrates with failure activity, requirements management, and comprehensive solutions to automate analysis and provide full traceability
MOUNTAIN VIEW, ...[Details]
Previously, my Xiaomi 1 battery connector had a detachment fault, and even the solder pad was torn off. I looked for a lot of information but couldn't find a fix. I would like to thank a netizen for ...[Details]
On the afternoon of July 16, iFLYTEK released a report on the issuance of non-public shares and a listing announcement, issuing a total of 108 million new shares to ten investors for projects such as...[Details]