[i=s]This post was last edited by strong161 on 2017-4-28 22:05[/i] EE's express delivery is still very good. I thought I would not receive the board until after May 1st because I was on a business tri...
[i=s]This post was last edited by xiashuang on 2022-7-19 10:51[/i]Modbus is a commonly used industrial communication protocol. This time, I ported Modbus RTU on HPM, mainly to get familiar with UART a...
I am now pretty good at writing C language. I also learned IBM-PC8086 assembly language. I studied it very hard back then and it is pretty good. I am preparing to switch to driver development under Li...
Generally, there are two types of impedance matching, one is by changing the impedance (lumped-circuit matching), and the other is by adjusting the wavelength of the transmission line (transmission li...
I am using EVC, how do I read the text messages in the SIM card? Does it work by scheduled scanning or what events are triggered when a text message arrives? Can anyone give me some advice?...
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]
1. What is temperature?
Heat is a type of molecular motion. The hotter an object is, the faster its molecules move. Absolute zero is defined as the temperature at which all molecular motion ...[Details]
Experimental tasks
A DS18B20 is used to form a temperature measurement system. The temperature measurement accuracy reaches 0.1 degrees. The temperature range is between -20 degrees and +50 de...[Details]
12v Lead Acid batteries used in trucks, cars, RVs and uninterruptible power supplies are usually rated at 12V. This circuit monitors the battery, the charge and discharge curves, gives the cu...[Details]
The concept of state machine
State machine is an important concept in software programming. More important than this concept is its flexible application. In a clear and efficient program, ther...[Details]
Printed circuit boards ( PCBs
)
are used in most electrical products
. If a PCB has low
insulation resistance
(IR), the performance of the circuits on the PCB will be greatly reduced...[Details]
In 2012, more than half of the cars in the European, Japanese and American car markets will be equipped with color displays, navigation systems, satellite communications and other in-vehicle infota...[Details]
At present, the traffic congestion in cities is quite serious. According to relevant news reports: In China, the traffic congestion has expanded from megacities such as Beijing, Shanghai, and Guangzho...[Details]
With the rapid development of cities and the improvement of citizens' living standards, the number of various vehicles in cities is growing, and the demand for parking spaces in major commercial an...[Details]
At present, a large number of cooling tower fans, speed fans and special fans are in use in petroleum, chemical, pharmaceutical, metallurgical and other enterprises. Some fans have no monitoring in...[Details]
introduction
Steam turbines are driven by high-temperature and high-pressure steam generated by boilers to run at high speed. They are key power equipment in thermal power plants. The emergenc...[Details]
As the global LED market demand continues to increase, my country's LED industry will face huge opportunities in the future. However, the core LED technology and patents are basically monopolized b...[Details]
Electric bicycles have long been a means of transportation for lower-income groups due to their affordability. The largest concentrated expense in the use of electric vehicles is the cost of replac...[Details]
1 Battery technology determines the fate of energy vehicles
Regardless of whether new energy vehicles are hybrid or pure electric vehicles, they cannot do without the core technology of batter...[Details]
introduction
The Steyr diesel engine produced by Weifang Diesel Engine Factory has huge power and is one of the main power models widely used in China's heavy machinery and large trucks. In ...[Details]