Indoor positioning system based on zigbee (8x8 m) uses 4 cc2530 as base station (one of them is used as coordinator), 1 cc2431 as mobile station (terminal device) and uses cc2431 positioning engine to...
[font=黑体][size=5]Requirements: Do not use a transformer, use discrete components, input 220V AC power, output DC 4V or so. Used to drive two 1W LEDs, the current is about 800MA![/size][/font] [font=黑体...
[img]http://i3.6.cn/cvbnm/86/b0/eb/1e1b36815199b89aa72af13b76ba12ad.jpg[/img] The source code is automatically generated by VS2005: // Win32Project2.cpp : Defines the entry point for the application. ...
This line in this PCB interferes with itself. The left and right spacing is 11.38mil, so there shouldn't be any problems. Does anyone know the reason? I have obsessive-compulsive disorder and I'm upse...
I designed a circuit that uses a 7.4V lithium battery, but the working voltage is 5V. The current of this circuit is about 150ma. What kind of conversion chip should I use? The main consideration is t...
After stm32 has been erased and written many times, it has been downloaded about 2000 times. Will the above situation occur? When the temperature feels cold, everything is normal; but when the tempera...
Today's computer peripherals are pursuing high speed and high versatility. In order to meet user needs, seven companies led by Intel launched the USB (Universal Serial Bus) bus protocol in 1994, wh...[Details]
The Portable Digital Data Acquisition System (PDDAS) uses LabVIEW Real-Time and PXI to control the wind tunnel test and record air pressure data from 128 different channels.
"The LabVIEW Real-...[Details]
Introduction
Power subsystems are becoming more and more integrated into the overall system. Power systems have moved from being separate "essential dangerous devices" to being monitorable...[Details]
My colleague and I spent the day chatting in the hotel bar. We had met with several customers. We were both wondering how come these engineers we were meeting knew almost nothing about analog techn...[Details]
The solidification and modularization of intelligent video analysis algorithms are the current trends in the application of intelligent video analysis technology. It perfectly combines intelligent ...[Details]
With the rapid development of urban economy, elevators are increasingly used as a vertical transportation tool. However, elevator fault detection and maintenance, especially the role of elevator remot...[Details]
LED is the abbreviation of light emitting diode, which is an electric light source made of semiconductor technology. The core part of LED is a chip composed of P-type semiconductor and N-type semi...[Details]
In the analysis of electronic circuits, static analysis (also known as DC analysis) is the basis of circuit analysis. However, it is well known that electronic components are nonlinear, so the anal...[Details]
RS-422 and RS-485 are both serial data interface standards, which were developed and published by the Electronic Industries Association (EIA). RS-422 defines a balanced communication interface with a ...[Details]
Nippon Electric Works and Volvo Technology Japan have developed a wireless power supply system for electric vehicles (EVs). Using this system, the two companies have successfully conducted an exper...[Details]
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]
1. Disadvantages of choosing too high a voltage level
Choosing too high a voltage level will result in too high an investment and a long payback period. As the voltage level increases, the...[Details]
It is well known to automotive suppliers that automakers are demanding more from their supply base. For connector suppliers, this means stricter requirements for product performance, stability and ...[Details]
Describe how to meet the challenges of complexity with a modern wiring design toolset. Option codes and expressions can simulate the variables of an automotive project. A full-featured tool suite c...[Details]
The era of mobile access to the Internet has arrived, and it will rapidly change the business and infrastructure needs of mobile operators under a whole new trend of requirements. We need 4G LTE to...[Details]