MQTT is a publish and subscribe messaging protocol based on TCP/IP . It is lightweight, simple, open and easy to implement. It is actually a message broker. The device publishes a topic and subscribes...
[i=s]This post was last edited by Quantum Well on 2016-12-1 11:47[/i]Ding ding ding~ Today I recommend a magic tool that can free your hands. Just wave your hands and you can control everything. . . C...
[i=s] This post was last edited by lb8820265 on 2019-5-9 23:11 [/i] [align=left][font=微软雅黑] Previously, we introduced two ways to use VC6 to make serial port debugging tools: [url=https://home.eeworld...
[size=4]Gradual power optimization is no longer the rule of the game for ultra-low power MCUs, but a "leap forward" mode, with many indicators related to power consumption constantly breaking records....
When I was doing gprs, I encountered such a problem. There was no problem when establishing lcp, pap, and ipcp. I got the mobile internal IP address, but when I sent UDP packets, the server could not ...
In recent years, lighting has become an important area that countries around the world are targeting to promote energy conservation and environmental protection. According to statistics, about 20% ...[Details]
In the previous series, we have listed some basic knowledge of C language in Tables 1 to 3. We hope that beginners can strengthen their memory of the above tables and gradually learn to use them wh...[Details]
Investment in
the
medical device
industry has been on the rise in recent years. In the past two years, venture capital for medical devices has almost doubled, reaching $4 billion in 2007. Fr...[Details]
Abstract: The output of high-range acceleration sensor is less than 10 mV under the excitation of small signal. The noise of traditional test system may cover such small voltage signal, so that hig...[Details]
Recently, news came from the certification department that the photovoltaic grid-connected inverter of Samil New Energy Co., Ltd. (hereinafter referred to as "Samil New Energy") has once again obta...[Details]
Traditional
virtual instruments
consist of a data acquisition
board
based on PCI bus and
corresponding software. However, with
the rapid development of
computer
network techno...[Details]
1 Overview
In the field of traditional lighting, the concepts and definitions of lamps and lamps are clear. Lamps and lamps have their own applicable product standards, supporting technical st...[Details]
The power consumption of a switching power supply includes fixed losses caused by parasitic resistances such as semiconductor switches, magnetic components, and wiring, as well as switching losses ...[Details]
introduction
The core features of mobile value-added service products are mobility, immediacy and personalization. Mobile value-added services are a new service mode that is rapidly developing...[Details]
New Automobile
Hydraulic Clutch
The hydraulic control system uses almost 100% advanced engineering plastics, which overcomes the shortcomings of the main and branch cylinders of metal clutc...[Details]
0 Introduction
Pneumatic
artificial muscle,
also known as pneumatic muscle actuator (PMA), began to be studied in the 1950s. In recent years, it has been widely studied and applied ...[Details]
AUTOSAR is a hierarchical architecture for automotive electronic embedded software jointly launched by global automotive OEMs and suppliers. The hierarchical architecture consists of a microcontrol...[Details]
An intelligent vehicle is a robot that can automatically drive in an environment according to a pre-set mode, or it can autonomously perform specific operations according to the on-site situation. ...[Details]
1. Low temperature storage
Lithium-ion power batteries need to be fully charged before storage. They can be stored at 20°C for more than half a year, which shows that lithium-ion power batteri...[Details]
With the development of power electronics technology and high-performance permanent magnet materials, the application of brushless DC motors has achieved rapid development in the fields of aerospace, ...[Details]
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