I bought a 8.86 LED desk lamp from a forum and thought it was rechargeable. When I received it, I realized it was a USB direct plug. I took it apart and installed a lithium battery for charging.The on...
The big topic of memory
key: You must have a logical diagram of memory in your mind.
What is the procedure?
Program = Code + Data
The code is placed in the code segment in Flash, and the variable data...
STM32 independent watchdog ,
Driven by a dedicated low-speed clock (LSI), it can still be effective even if the main clock fails, so this watchdog can work under requirements unrelated to the main clo...
Conclusion: The touch screen of mini2440 development board is just a simulated serial port communication. 1. By looking at the schematic diagram of the LCD driver board of the mini2440 development ...[Details]
Connect a potentiometer to the analog interface 0 of the Arduino 168 Duemilanove 2009ATMEGA168P controller, and connect an LED to the digital interface 13 of the controller. When the potentiomet...[Details]
——Six major trends guide enterprises to sail smoothly
With smartphones so prevalent today, people often forget that mobile apps are a “new thing.” Since the first mobile phone came o...[Details]
DATA SEGMENT DATA ENDS
CODE SEGMENT ASSUME CS:CODE
ORG 11B0H ; Set the starting position of program storage
START:
CLI ; Disable interrupts, need to disable first
; Initialize 8255 command...[Details]
In real-time control systems, the most important indicator for selecting a microcontroller is the calculation speed. The instruction cycle is an important indicator that reflects the calculation sp...[Details]
There are many types of LED automotive lighting , which are mainly divided into two categories: interior lighting and exterior lighting. Before introducing the solution, we need to clearly know ...[Details]
A Beijing startup called Wuhe is making electrode materials and batteries that could lower the cost of electric vehicles. The company uses nanostructures for its battery materials, and like other rece...[Details]
Huawei recently said it could supply 5G hardware to the UK that is not affected by White House sanctions in the next five years, according to The Guardian. It is reported that Huawei has stockpiled 5...[Details]
Some time ago, I used Liu Yang's computer to look at a wireless chat thing made by someone else using nRF24L01 on the Internet. Both sides can send characters or Chinese characters. At first ...[Details]
According to Japan's Kyodo News, in order to respond to cyber attacks and other international threats, 42 countries that have joined the Wassenaar Arrangement, including the United States...[Details]
The official WeChat account of Meitu Mobile released a farewell letter, saying that Meitu V7 will be the last Meitu mobile phone product with pure bloodline. Regarding the issue of busine...[Details]
One section
You have just started to enter this industry, and you only have a general understanding of PMOS/NMOS/BJT, etc. You are not very clear about the characteristics of various devices, and y...[Details]
The concept of brightness of visible light emitted by an LED is fairly easy to understand.
LED dimming method
There are two common methods for dimming LEDs with switch-mode drivers: pulse...[Details]
I saw today's comments suggesting that I write something about REFERENCE. I have wanted to write about this for a long time, but it is not easy because there are few Chinese materials on this aspect o...[Details]
The emergence of new materials, the continuous improvement of processing technology, and the rapid development of high-sensitivity CCD devices and electronic technology have made high-resolution opti...[Details]
DIY/Open Source Hardware
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