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Most LED power supply circuits are composed of a switching power supply circuit + a feedback circuit. The feedback circuit samples the load and adjusts the duty cycle or frequency of the switching ...[Details]
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The STM32F series microcontrollers have a large internal FLASH memory, but no EEPROM memory. Sometimes, an additional EEPROM chip has to be added to save parameters. This is quite unfair for most MCU...[Details]
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Based on the 51 microcontroller, the eight digital tube patterns are displayed as follows: xxx11xxx→xx2222xx→x333333x→44444444→x555555x→xx6666xx→x777777x→88888888 Each state lasts one second, and t...[Details]
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On February 3, the Beijing Economic and Technological Development Zone (referred to as "Beijing Yizhuang") held a project signing event. A total of 129 key projects signed "entry agreements" through ...[Details]
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According to the data recording requirements of electronic equipment in an industrial field, an embedded
data recording system
based on short-range wireless communication
is designed. The...[Details]
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The Wall Street Journal website recently published an article titled "From tablets to sex toys, chip shortages have far-reaching impacts," saying that the global chip shortage has made it difficult f...[Details]
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One of the most profound changes in spectrum analysis since the 1980s has been the use of digital technology to replace the analog circuits in previous instruments. With the introduction of high-perf...[Details]
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store
To prevent moisture, LEDs should be stored in a dry and ventilated environment with a storage temperature of -40℃- +100℃ and a relative humidity below 85%.
The LED shoul...[Details]
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1. Introduction to ARM processor and characteristics of RISC Introduction to ARM Processor ARM (Advanced RISC Machines) is a 32-bit RISC (reduced instruction set) processor architecture, and the AR...[Details]
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I just installed the STVD compiler, but it doesn't show how much RAM and ROM are used when compiling? There are two ways to solve this problem: one is to look at the .map file, and the other is to ad...[Details]
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Currently, almost all mainstream oscilloscope channels of common brands are not isolated. Therefore, when performing multi-channel testing, there will be a certain degree of mutual interference betwee...[Details]
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A filter/filter circuit is a device/circuit that can effectively filter a certain frequency band or a frequency band outside of the frequency band. It is one of the more common electronic components/...[Details]
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This is extracted from a successfully manufactured tracking car.
Download address of schematic diagram and source code compressed package: http://www.51hei.com/bbs/dpj-19526-1.html
The following...[Details]
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After the iOS 15.4 update, many friends who had just bought the Apple Watch were dumbfounded: I don’t like sports, and I just thought it would be more convenient to use the Apple Watch to unloc...[Details]
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ALE/#PROG: Address latch control/on-chip EPROM programming pulse input signal
The ALE (Address Lock Enable) function is that when accessing external memory, the P0 port is used as an addr...[Details]
Test/Measurement
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