I submitted a board before the board factory closed for the National Day holiday. It was pretty fast. It was finished and shipped in four days. I made new things during the holiday. Because I was main...
TI's BXL format:The PADS9.3 format I converted:And I modified the library a little bit:[[i] This post was last edited by dontium on 2013-3-2 23:23[/i]]...
This is a prototype made with the 2416 core board. The program was ported from the 2440. The main thing was to modify the IO driver (used to implement the interface protocol of the WG34 card reader, a...
[i=s]This post was last edited by ywlzh on 2016-4-20 13:03[/i] A DS1302S came in these days. It is said that the chip is original. This aroused my interest. Circuit diagram: Alas, I don’t know what’s ...
I found a very good blog written by Mr. Chen Yongzhen. Friends who make LED or fluorescent lamps can take a look. If you have any opinions, please share them. [url=https://home.eeworld.com.cn/my/space...
[color=#000000]The minimum switching current of the TLV61220 chip is 200ma, what does this mean? Does my load current have to be greater than 200ma? [/color] eeworldpostqq...
In early 2002, I started to write a working program for an IC card prepaid electricity meter. The meter used Philips' 8-bit 51-expanded single-chip microcomputer
87LPC764
, and wa...[Details]
introduction
my country has a vast territory and a large population. The scale of housing construction is huge, and the amount of residential construction is large and wide. It is still on t...[Details]
Instrument stepper motor
The stepper motor is an open-loop control element that converts electrical pulse signals into angular displacement or linear displacement. In the case of non...[Details]
LED lamps and bulbs are now rapidly replacing incandescent, halogen and CFL (compact fluorescent lamp) light sources in many general lighting applications. Flyback DC/DC converters are the power su...[Details]
In recent years, with the rapid development of the information industry, dot matrix LED display screens have been widely used in various advertising and information display systems such as the fina...[Details]
Continuity test
A variety of devices need to be checked for continuity, including cable assemblies, printed circuit boards, and connectors to ensure that these components have the expected contin...[Details]
Today, the value of electronic components in cars accounts for 15-20% of the total vehicle. In the future, this proportion may be as high as 30-40% as more safety electronics, fuel consumption and ...[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]
At present, how various communication technologies will evolve after 3G is a focus of great concern in the industry. Especially for TD-SCDMA, whether it can achieve smooth evolution to the next gen...[Details]
With the continuous advancement of various technologies in the field of measurement and control, the baseband subsystem of general measurement and control equipment has entered the fourth generation o...[Details]
Abstract: Based on the ZigBee parking lot SMS car search system, the location of the vehicle in the parking lot is sent to the owner through SMS, which is convenient for the owner to quickly find ...[Details]
Distributed Wireless Communication System (DWCS) uses distributed antennas, distributed processing control, joint signal processing and other technologies to improve the system's spectrum efficie...[Details]
For battery-powered portable devices, in addition to breaking through the limitations of processing power, the performance of portable system power supplies also needs to be continuously improved. ...[Details]
introduction
When it comes to the production of mobile phone lithium-ion batteries, the first thing that comes to mind is Japan's industrialized mechanical assembly line, NOKIO, MOTOLROLA's st...[Details]
In order to prevent the lithium battery from being damaged by abnormal conditions such as overcharge, over discharge, and overcurrent, a lithium battery protection device is usually used to prevent...[Details]
DIY/Open Source Hardware
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