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Recently, I want to learn more about STM8, so I chose to write the temperature and humidity sensor DHT11 driver code from scratch. I encountered some problems and also gained some experience. I hope ...[Details]
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//***************************************
// HMC5883 IIC test program
//Use the microcontroller STC89C51
// Crystal: 11.0592M
// Display: LCD1602
// Compilation environment Keil uVision2
// Refer to ...[Details]
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Preface
High-brightness LEDs are highly efficient and reliable, and are a very promising low-energy power source. Due to the large range of forward voltage variations of LEDs and t...[Details]
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Since last year, when the 5G order was issued, the entire industry chain has entered a state of "one move affects the whole body". On the premise that the three major operators want to realize 5G bas...[Details]
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Introduction
The two computer systems of the 2x2 out of 2 system each have two CPUs, and all structures and accessories are exactly the same. The two systems use dual hot backup, which greatly ...[Details]
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ATmega16 has four 8-bit bidirectional I/O ports PA, PB, PC, and PD, which correspond to 32 I/O pins, each of which can be used independently for the input and output of logic signals. Under the worki...[Details]
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In actual production and life, it is often necessary to detect the continuity of the circuit. The common method is to use the resistance range of a multimeter for detection, which is simple and practi...[Details]
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I was one of the earliest LED power supply manufacturers. I started to work on it at the end of 2006. It has been more than three years. My feeling about LED driver power supply has always been two...[Details]
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1. Why does the 51 microcontroller prefer to use 11.0592MHZ crystal oscillator? First: Because it can be accurately divided into clock frequencies, related to the baud rates commonly seen in UARTs ...[Details]
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China Energy Storage Network News:
Zhang Haiming, deputy general manager of the Energy Internet Department of Sungrow Power Supply Co., Ltd., delivered a keynote speech on Sungrow's one-stop ...[Details]
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SPI is the abbreviation of Serial Peripheral Intcrface, usually called "synchronous peripheral interface", which is a full-duplex synchronous serial bus developed by Motorola. This bus is widely used ...[Details]
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As the wave of automation continues to advance,
the demand for
robots
in factory production lines
is increasing day by day. In recent years, ABB, a global robot giant, has kept up with the p...[Details]
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Due to the continuous development of high-tech, the miniaturization and digitization of instruments have been realized. In the 1990s, high-precision, high-performance, and multi-functional instrume...[Details]
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The charge and discharge capacity of small-capacity capacitors is small, and it is difficult to use a multimeter to judge whether they are good or bad. The method of judging the quality of the capac...[Details]
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1. Selection of Optocoupler
For optocouplers using a phototransistor, the CTR range is mostly 20% to 300% (such as 4N35), while PC817 (not recommended) is 80% to 160%, and Darlington optocouplers...[Details]