Following the previous post New Uses for Old Phones (1) - Basic Methods , the next step is to install F-Droid ( https://f-droid.org/ ). F-Droid is a FOSS (Free and Open Source Software) store on the A...
Due to the impact of the epidemic, foreign trade orders have been cancelled. The existing inventory of PD fast charging (27W) needs to be cleared at a special price. There are 1,200 units in stock. Bo...
There are many types of radio frequency heads, all of which follow certain rules, but a good memory is not as good as a bad pen.
Even though we speak Chinese every day, we still need to have a Xinhua ...
[i=s]This post was last edited by jameswangsynnex on 2015-3-3 19:59[/i]The thermal conductive medium materials traditionally used in electronic equipment mainly include thermal grease, thermal silica ...
China Energy Storage Network:
At present, urban development is facing the problems of prominent contradictions between ecological environmental protection and rapid economic development, the ...[Details]
About 540 million years ago, organisms evolved eyes, and more than 80% of the objective world information is perceived through the eyes; in the process of development, it has become a rapidly devel...[Details]
0 Introduction
Digital optical power meter is a portable instrument controlled by a single-chip microcomputer that can measure the strength of optical signals. It is an important instrument...[Details]
According to foreign media reports, General Motors (GM) has applied for a new patent for its reclining seat airbags with the United States Patent and Trademark Office. The patent is called "Thorax An...[Details]
The MAX44251/MAX44252 are 20V, ultra-precision, low-noise, low-drift amplifiers that provide near-zero DC offset and drift by using a patented autocorrelating nulling technique. This method continuou...[Details]
1. RSA algorithm is the first algorithm that can be used for both encryption and digital signatures. It is also easy to understand and operate. RSA is the most widely studied public key algorithm. ...[Details]
Recently, the 3rd World Intelligence Conference 2019 has just ended. At the conference, the MUSE concept car produced by the company became the focus of everyone's attention. This car is equipped w...[Details]
In the development of automobiles from generation to generation, higher, faster, and stronger configurations are no longer the only criteria for choosing a car. Whether a car is easy to drive, whet...[Details]
Touch switch
As a type of switch, it has been widely used due to its advantages such as low price, strong contact, easy use, high reliability, and fast action. However, most of the t...[Details]
1. Introduction
In order to reduce the pollution of internal switching power supplies of office automation equipment, computers and household appliances to the power grid, the International El...[Details]
The inverter circuit is shown in the figure, which converts the high-voltage DC output by the PFC circuit into high-frequency AC for use in electrodeless lamps. After the power is turned on, the PFC ...[Details]
1. Code: #include reg52.h // reg51.h includes 52 MCU register library sbit led = P1^0; //Only addresses divisible by 8 can use sbit to define a certain bit single-endedly // ports...[Details]
At a time when the strategy of launching a large number of products is in vogue, Meizu's product layout of focusing on quality rather than quantity is obviously contrary to the "trend". But it is pre...[Details]
In automotive power systems, damage to DC-DC converters can be caused by a variety of factors. However, one of the main reasons is that the residual voltage of the surge TVS (overvoltage protector)...[Details]
DIY/Open Source Hardware
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