The following picture is a picture of the key display board, which uses TM1721 for LCD display and key scanning. However, in actual use, it feels that the anti-interference ability of this chip is ver...
1. Make a minimum system board: If you have never done ARM development, it is recommended that you do not be greedy and complete all applications at the beginning, because the startup method of ARM is...
[color=#333333][font=微软雅黑, arial][size=16px]The circuit is shown in the attachment and the analysis is as follows. If there is anything wrong, please correct me. Thank you! [/size][/font][/color] [col...
[i=s]This post was last edited by paulhyde on 2014-9-15 09:12[/i] I would like to share with you my competition paper on digitally controlled current source. Let's exchange ideas....
Our team has the following mature solutions to provide: (1) DM365 (720P), DM365 (1080P) IP cameras, network cameras (2) DM6441/DM6446 (D1 resolution) IP cameras, network cameras (3) DM6467 8-channel D...
The load is an LED, the voltage is 5.5-7.5v, the current is 50mA. The power supply is a 3.7V-4.2V lithium battery. There is a button on the board, press it once to turn it on, press it again to turn i...
In recent years, the market for mobile/portable devices such as smartphones and laptops has continued to grow rapidly. While these products continue to integrate more new features to enhance the ...[Details]
1. Introduction
Light control circuit plays a vital role in urban street lamps or corridor lighting. With light control circuit, the lights can be automatically turned on and off according to ...[Details]
From the PIC16F946 datasheet, we know that there are two ways to write values to the LCD for display:
1. Directly write the value to LCDDATA1~LCDDATA23
2. Use disconnect t...[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]
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]
With the rapid development of wireless
digital communication
, more challenges have been raised for integrated circuit design and testing. In the product design stage, in order to ensure
t...[Details]
The launch of Shenzhou IX is imminent, and Tiangong is welcoming visitors again. Yesterday, Professor Fu Qiang, Vice President of the Institute of Science and Industrial Technology of Harbin Instit...[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]
Every time I go home and walk up the stairs, I am always scared. The corridor lights are often broken, and no one changes the bulbs, or they are not smart enough and need to be operated manually. E...[Details]
Leakage current is generated by parasitic resistance paths between the measurement circuit and a nearby voltage source. This current can significantly reduce the accuracy of low current measurement...[Details]
The capacity of a battery depends on the amount of charge and discharge, in addition to some factors of the battery itself. Obviously, if the charge and discharge of the battery can be recorded all...[Details]
As a new type of centralized and decentralized elevator control system, serial communication has been widely used in China. Compared with the previous centralized and unified control system, each s...[Details]
Reliability and real-time performance are the basic requirements for control systems. Initially, motor control used analog circuits with discrete components. With the advancement of electronic tech...[Details]
Today, as information becomes an increasingly important resource, strong market demand and the development of microelectronics technology have led to the rapid development of portable electronic sy...[Details]
PCB Design
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