[i=s]This post was last edited by tianshuihu on 2020-1-9 23:49[/i]It was already in 2019, but I just sorted it out today...Last May, I noticed that the battery of my Bluetooth speaker was getting lowe...
Hello experts, I have a question that has troubled me for a long time, which is the synchronization of sqlce 2.0 and sql 2000. My development environment is vb 2005 + sqlce 2.0 sp3 and sql 2000 sp3 + ...
According to a report from the Guangdong Provincial Emergency Management Department, at around 4 p.m. on May 1, a confined space suffocation accident occurred during the cleaning of the RO water tank ...
STEVAL-MKI137V1 manual:STEVAL-MKI137V1 schematic diagram:STEVAL-MKI137V1 Bill of Materials:STEVAL-MKI137V1 GERBER files:LIS3MDL information post:
https://bbs.eeworld.com.cn/thread-1070028-1-1.html...
Development purpose: To realize point-to-point communication between PN532 module and NFC mobile phone through single chip microcomputer control [font=Times New Roman] [/font][/align][align=left] [/al...
0 Introduction
With the development of my country's economy, the number of motor vehicles continues to increase. The growth of existing roads and other hardware facilities can no longer meet t...[Details]
There are three types of mobile TV: one is based on analog TV broadcasting network, another is based on mobile communication network, and the other is based on digital broadcasting network. The f...[Details]
1. With the development of modern industry and the continuous improvement of automation, some medium and large control systems have been greatly facilitated, which not only makes control easier, bu...[Details]
The potentiometer is an adjustable electronic component. The main functions of the potentiometer in the circuit are as follows:
1. Used as a voltage divider
A potentiometer is a continuou...[Details]
Toyohashi University of Technology demonstrated electric field coupled wireless power supply technology using life-size car tires and roads at the wireless technology exhibition "Wireless Technolog...[Details]
As a simple and practical input device, buttons have been used in various microcontroller application systems and are ubiquitous. However, the buttons used in different practical occasions are also...[Details]
1. When the slip speed regulating motor is undergoing frequency conversion and energy saving transformation, the original excitation box (referred to as the speed regulating box) and the original s...[Details]
Since AC mains power may experience power outages, voltage sags and surges, continuous undervoltage and overvoltage, and frequency fluctuations during supply, these factors will affect the continuous ...[Details]
1. Proposal of
reconfigurable
measurement and control system
The measurement and control system generally refers to a system based on
computers
to realize data acquisition a...[Details]
1 Introduction
Ultrasound refers to elastic vibration with a frequency higher than the audible frequency limit (i.e., in the frequency band above 20 kHz). The propagation process of this vib...[Details]
Key Points
1. Now, in addition to high-end smartphones and tablets, users also expect to use touch screens in other applications, and they are gradually appearing in cars and instruments.
...[Details]
A stepper motor is an electromagnetic mechanical device that converts an electrical pulse signal into an angular displacement or a linear displacement. The stability and reliability of a stepper mo...[Details]
The installation locations of DC-DC converters are relatively scattered. DC-DC converters can be found on the power board, main board, logic control board and other circuit boards of PDP color TVs....[Details]
There are many types and styles of digital voltmeters in design and development. Traditional digital voltmeters have their own characteristics. They are suitable for manual measurement on site. Tra...[Details]
Stepper motors, also called steppers, use the principles of electromagnetism to convert electrical energy into mechanical energy and have been used since the 1920s. With the increasing popularity o...[Details]