A lot of information, all free. Wireless communication section: Wireless Communication Fundamentalshttp://www.itgoal.net/viewthread.php?tid=6982&extra=page%3D1 Antenna Basics and Applicationshttp://ww...
travis: Add BLE submodules to ESP32 IDF4 build.
esp32/boards: Enable BLE by default when building with IDF 4.x.
esp32: Implement BLE using Nimble from IDF 4.x....
[i=s]This post was last edited by qq670300923 on 2016-8-14 20:53[/i] The Internet was disconnected yesterday :Sad:, time flies, I didn't expect that I have been in Beijing for a month. (The Internet i...
I have an LM3S811 evaluation board, which I am using for my graduation project. I want to use 8 IO ports to control the row and column scanning of 154 and 595 to realize the display of 16*16 Chinese c...
The concept of state machine
State machine is an important concept in software programming. More important than this concept is its flexible application. In a clear and efficient program, ther...[Details]
Motors are important products that convert electrical energy into mechanical energy to achieve automation, and they are widely used in industrial control, medical electronics, white a...[Details]
Currently, each country is developing its own USB interface
charging specifications
, which leads to a major problem that a USB interface
charging
device manufactured in one country...[Details]
introduction
The Steyr diesel engine produced by Weifang Diesel Engine Factory has huge power and is one of the main power models widely used in China's heavy machinery and large trucks. In ...[Details]
The biggest advantage of Profibus is that it is guaranteed by the stable international standard EN50170 and has been proven to be universal in practical applications. It has been widely used in man...[Details]
1 Introduction
Lijia'an Yellow River Diversion Culvert is a large gravity diversion gate in the lower reaches of the Yellow River. The Yellow River Diversion Culvert is located in Lijia'an Vi...[Details]
Fairchild's FAN6208 is a synchronous rectification (SR) controller for isolated LLC or LC resonant converters that can drive two individual SR MOSFETs emulating the behavior of rectifier diodes. FAN62...[Details]
1. Introduction
Stepper motor is a basic component that converts electrical energy into kinetic energy. It has been widely used in a variety of electromechanical equipment, such as various machine...[Details]
The programmable controller directly controls the stepper motor, which can significantly reduce the cost of the control system of the modular machine tool automatic production line. The article int...[Details]
The circuit has overcharge protection, over-discharge protection, over-current protection and short-circuit protection functions. Its working principle is analyzed as follows:
1 Normal state
...[Details]
Previously used primarily in high-power power supplies and large industrial and consumer power supplies, supercapacitors are now finding their way into products of all sizes, especially portable de...[Details]
First, the choice of charging location. Wireless charging technology is related to the distance and state of the charger and the charged device. That is to say, the distance between the two cannot...[Details]
1. Why do we need to do electromagnetic compatibility design for products?
Answer: To meet product functional requirements, reduce debugging time
,
make products meet the requirements o...[Details]
1 Theoretical Analysis
Ultrasonic waves
When propagating in a suspension, the ultrasonic waves that encounter the suspended particles are scattered and attenuated at the interface, an...[Details]
1 Introduction
When studying electronic courses such as "Electronic Circuits" and "Signal Processing", college students only understand the real signal characteristics in theory. They cannot r...[Details]
Embedded System
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