I bought a mobile power board a few days ago. I didn’t think much of it at first, but later I found that the USB A port was quite special. It can be plugged in both ways....
The power consumption of the first entry into stop mode is correct. After being woken up by an external interrupt, the power consumption of the next entry into stop mode is 300uA higher. What is going...
[i=s]This post was last edited by wangran_95 on 2019-12-31 08:47[/i]After using the device, I found that it was hard to find a power supply. There were two boards and two power supplies, so I had to c...
[i=s]This post was last edited by zhang520 on 2021-10-21 15:08[/i]Error[Li006]: duplicate definitions for "_interrupt_21"; Change 21 to 20 and the system will run fine...
[i=s]This post was last edited by symic on 2022-3-20 19:42[/i]I am very happy and surprised to get the opportunity to review the BearPi-HM Nano development board. Thanks to Nanjing BearPi Intelligent ...
There is no "Enable Advanced Power Management" item in my mind. What is the reason and how to solve it? Before I came here to ask questions, I tried the following methods but they didn't work: 1. In t...
/* When using the 51 series MCU, it is sometimes necessary to simulate the I2C bus. */ /* Here is an example (read and write serial EEPROM chip at2402) */ /*******************************************...[Details]
Recently, the State Intellectual Property Office announced that vivo applied for three mobile phone design patents on July 1, 2019. The design details of these three mobile phones can be seen through...[Details]
Capacitive level gauges are suitable for measuring the level (material level) of pressurized conductive and non-conductive liquids (solids) in pressurized containers. The UFB radio frequency capaciti...[Details]
The development of serial bus can be summarized into three stages: Clock parallel bus: less than 200MHZ, such as CPCI, PCIX, SDRAM, ISA, PIC Source synchronous clock parallel bus: less than 3200M...[Details]
"Based on the experience of fuel cell research and development, solid-state batteries still need to be developed step by step. First, the electrolyte problem, then the negative electrode problem, a...[Details]
As Huawei's P40 series launch on March 26 is getting closer, it has been found that the Broadcasting and Telecommunications Commission of Thailand has issued network access certificates to Huawei...[Details]
In recent years, the network video surveillance industry has continued to heat up, and video surveillance management applications have begun to enter the networking era. From front-end video acqu...[Details]
Gartner: 2023 is a critical year for pure electric vehicles • The automotive industry will see more turmoil in 2023. • By 2025, 95% of new cars on the road will have products from tech giants in ...[Details]
This article introduces a method of simulating PLC control using Atmel89S51 microcontroller, designing a controller suitable for rigid clutch punches, introducing the basic composition and working pr...[Details]
For a bootstrap converter (fb00t. StraPP edconverter), the input capacitor can play two major operating functions. First, the input capacitor acts as a power supply during the soft-start process, p...[Details]
Electromagnetic compatibility (EMC) refers to "the performance of a device, equipment or system that allows it to work normally in its own environment and does not cause strong electromagnetic inte...[Details]
According to notebookcheck, a slide of Samsung's Galaxy Tab S8 Ultra flagship tablet was exposed online. This product is expected to be equipped with a Snapdragon 8 Gen 1 chip and a 14.6-inch ...[Details]
The bootloader and kernel need to use assembly language, especially during initialization! And it is used in places where efficiency is very important.
Assembler framework:
It...[Details]
Fixed frequency boost converters are well suited for driving LED strings in constant current mode. These converters operate in discontinuous conduction mode (DCM) and are effectively used for fast di...[Details]
As the name implies, non-contact temperature sensors are sensors that can measure temperature without direct contact with the object being measured. This type of sensor is widely used in industry, ...[Details]
Making friends through disassembly
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