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...
The program originated from a competition project of my team. The project file is a large project with a lot of content written by other team members. It is not easy for me to post it directly, so I ...[Details]
Car headlights and projectors seem to have something in common, except that one is used to illuminate the night, while the other is used to project image information. With the development of car ligh...[Details]
On February 3, 2021, according to Tech Planet, Huawei released a "Several Statements on the Company's Agent Registration of Yao Anna's Trademark" in its internal Xinsheng Community. The statement sai...[Details]
In 2021, a full-scale chip shortage broke out, causing a serious break in the supply chain. The development has improved so far, and the supply chain of the entire industry is also reconnecting the t...[Details]
Maxim Integrated Releases Trinamic Open Source Reference Design to Significantly Reduce Robotic Arm Size and Accelerate Development
Hardware-based field-oriented control combined wit...[Details]
Portable products have more considerations beyond basic requirements
When selecting a low dropout linear regulator (LDO), basic considerations include input voltage range, required output ...[Details]
In the field of wireless remote control, PT2262/2272 is one of the most commonly used chips. However, the chip requires to be used in pairs, which greatly affects the use of the chip. Starting from...[Details]
1. Introduction:
There are many types of beverage filling machines today. They can be divided into two categories according to their scale. One is a large-scale filling production line, which ...[Details]
■ Perhaps this is why it is difficult for companies to survive the large-scale digital transformation brought about by Industry 4.0 without the critical help of IIoT. The combination of artificial ...[Details]
LED display screens have become a new generation of information dissemination media tools due to their low power consumption, long service life, low cost, high brightness, few failures, wide viewin...[Details]
In recent months, there have been a number of worrying reports of Airbnb hosts installing hidden cameras in their properties without disclosing them to guests. Back in January, CNN reported on a C...[Details]
Special reminder for the temperature-controlled motor project: When using Proteus software for circuit simulation, the power pins of TLC549 and AT89C51 are hidden. When making the circuit board, be s...[Details]
Modern living patterns make family life more and more closed, and safety issues are particularly important. Currently, security and alarm systems are one of the most important ways to ensure the sa...[Details]
The vacuum nitrogen packaging machine is a composite packaging machine used to package food, medicine, chemicals and other items. It protects the packaged items from oxygen, moisture and other poll...[Details]
Construction conditions: New energy power is random and volatile, which brings great risks and challenges to the safety and stability of the power system. The development of energy storage can not onl...[Details]
Programming Basics
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