[i=s]This post was last edited by yhye2world on 2019-8-15 15:10[/i]As shown below, RS232 to RS485 passive converter;
The terminal board on the RS485 port side is lost.Now I want to use a DB9 connector...
When debugging MQTT, because multiple modules and the same program were used, it was found that during the debugging process, when one module was online, it would squeeze out the connection of another...
Starting from now - June 16, the channel for exchanging TI points for chip points has been opened. During this period, the full amount can be exchanged according to the exchange rate. After June 24, t...
I recently encountered a rather strange problem when I was studying the embedded development board nrf52832 and using the keil software for simulation. linking... .\Objects\Experiment.axf: Error: L621...
[size=4]Principle of rectifier transformer[/size] [size=4] [/size] [size=4]The principle of rectifier transformer is the same as that of ordinary transformer. Transformer is a device that converts AC ...
Living in today's technologically advanced world, it's easy to forget how "primitive" our lives were just a few years ago. Back then, we used outdated products such as phone books, paper t...[Details]
With the rise of healthy eating, air fryers that claim to be able to fry chicken nuggets, French fries and bake with just one click without using oil have become small appliances favored by foodies...[Details]
Contents The invention relates to a liquid level gauge, in particular to a magnetic float liquid level gauge. Background of the Invention During the cold winter in northern my country or other regi...[Details]
Composition of frequency converter
The frequency converter is a power conversion device that converts the three-phase AC power with a fixed frequency and fixed voltage input to the frequency c...[Details]
Smart cars are a hot concept, and the future smart cars cannot be separated from the Internet. In the foreseeable future, cars will be able to communicate wirelessly with each other and with traffi...[Details]
Low resistance measuring instruments can be divided into two categories according to the size of their test current: one type has a larger test current and is mainly used to measure the DC low...[Details]
OFweek Cup 2022 China
Robot
Industry Annual Awards (abbreviated as OFweek Robot Awards 2022) is jointly organized by OFweek, China's high-tech industry portal, and its authoritative robo...[Details]
Arduino is a popular electronic interactive platform, developed based on embedded systems, with advantages such as simple use, diverse functions and low price, and is widely used in electronic system...[Details]
1. Introduction
The vacuum treatment of molten steel is used for dehydrogenation, denitrification, deoxidation (light treatment) and desulfurization of molten steel, and it also has the functi...[Details]
Mobile energy storage power supplies can be used for outdoor camping, RV travel, earthquake prevention and disaster prevention, etc., to meet the needs of power outages, lighting, SOS rescue, etc.,...[Details]
Solutions for getting the most power from Power over Ethernet:
Descent method
A common technique used in parallel DC/DC power supplies is the so-called droop ...[Details]
Recently, the official WeChat account of People's Daily released a message: China will impose sanctions on US companies involved in selling weapons to Taiwan, and mentioned Honeywell by name. The r...[Details]
MCU-485-PC serial communication.jpg (106.21 KB, Downloads: 21) Download attachments and save them to the photo album Uploaded on 2018-3-26 01:45 The microcontroller source program is as foll...[Details]
1. Access the memory location of the absolute address:
#define pISR_EINT0 (*(unsigned *) (_ISR_STRATADDRESS+0x74))
The above statement casts the unsigned integer _ISR_STRATADDRESS+0x74 to ...[Details]
With the rapid development of new energy vehicles and autonomous driving, many EMI problems have occurred in the application of automotive power chips:
First, autonomous driving and smart cock...[Details]
Analog electronics
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