[i=s] This post was last edited by chenbingjy on 2018-10-9 11:20 [/i]There are two USB ports, one with STLINK and one without STLINK. The one with STLINK works fine, but the one without STLINK does no...
MF RC500 is a member of a highly integrated reader IC family for contactless communication at 13.56MHz. This reader IC family utilizes advanced modulation and demodulation concepts and fully integrate...
[color=#000000] [font=微软雅黑][size=4]The long-awaited EEWORLD official bidding event is back. Sorry for the long wait :congratulate: This time I brought you four good books: [/color] [/size][/font][/col...
I am going to collapse. I am a beginner of STM32. My teacher asked me to make a wireless module communication used in a project. I want to use STM32F407 USART and DMA to send and receive data. The par...
Please help me find the cause of the code C2061 C2660 errors. I have been working on it for a long time and don’t know why it is wrong: //presetdlgs.h // int ReadHospitalInfo (const char *path, Hospit...
The development boards at home are almost moldy. I am going to take them out for National Day and sell most of them. The price is definitely lower than anyone else on Taobao, plus there are a lot of g...
Do you often have to add brake fluid to your car's brakes? The fact that you need to pump out the brake fluid to make sure there is no gas in the brake fluid line may not be done by the car owner h...[Details]
No matter which processor you are learning, the first thing you need to understand is the registers and working mode of the processor.
ARM has 37 registers, including 31 general registers and ...[Details]
For a long time, due to the limitation of hardware conditions, the display devices of traditional small handheld devices such as PDA are usually monochrome LCD, and the user interface is very simpl...[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]
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]
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]
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]
Abstract: In order to realize wireless automatic alarm and monitoring of major safety places, based on the basic principle of pyroelectric infrared sensing, a detector for receiving infrared radia...[Details]
Among the uses of electrical energy, lighting accounts for a considerable proportion. Compared with the earlier ordinary incandescent lamps, the fluorescent lamps and energy-saving lamps we commonl...[Details]
Movpower is a portable power bank. It can charge most mobile phones and digital products, such as digital cameras, PDAs, and mobile phones such as Apple, iPod, Blackberry, Motorola, Samsung, Nokia,...[Details]
Fairchild's FAN6208 is a synchronous rectification (SR) controller for isolated LLC or LC resonant converters that can drive two individual SR MOSFETs emulating the behavior of rectifier diodes. FAN62...[Details]
Previously used primarily in high-power power supplies and large industrial and consumer power supplies, supercapacitors are now finding their way into products of all sizes, especially portable de...[Details]
First, the choice of charging location. Wireless charging technology is related to the distance and state of the charger and the charged device. That is to say, the distance between the two cannot...[Details]
1 Introduction
In the process of crude oil pipeline transportation in the oil industry, crude oil needs to be handed over between enterprises, so flow meters are widely used. The measurement ac...[Details]