Qualcomm Apple settled, Intel stopped 5G R&D, and Wentai Technology ushered in a good opportunity for development
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DSP Learning Introductory Video -
I'm a beginner. Do you have any related DSP learning videos? I thought you were connected to us. You can search the posts of the tumbler who replied to the owner's smile through the search function of Google or EEWORLD forum. There are resources in iku~ -
Smiling tumbler DSP and ARM processor
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What is the problem of Target halved when PIC33F runs the program -
DMA0 is used to store ADC sampling results, 4 analog inputs, scan sampling, and complete 40 sampling times to generate interrupts. Then send the data with UART1 through DMA1. Targeted appears soon after the program runs, and the running ends. But it is found that the serial port has received data, but not every execution will receive data, and it is garbled. In fact, I haven't connected anything to the four analog channels. In principle, is the sampling 0? Attached is the procedure, please look at it with the help of God//-------------------------------------------------------------------------------/ -
lene Microchip MCU
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Operational Amplifier Parameter Analysis and LTspice Application Simulation, Chapter 3, Phase Margin -
I have never heard of the phase margin, because the operational amplifier circuit I contact does not add capacitance. These are simple circuits. Now I feel a little scared. I think these circuits of op amp are copied from ancestors. There is no need for such analysis and simulation. But when I read this book, I felt that my previous knowledge was too little. It is very few. The phase margin is defined as the absolute value of the difference between the 180 degree phase shift and the phase shift where the open-loop gain is reduced to one time (unit gain) in the amplifier's open-loop gain frequency curve. I don't care much about this. However, I am interested in the example of 2.9.2. I think it is unlikely to oscillate. If it were me, I might do the same. I simulated it, really -
ddllxxrr Analog electron
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3D photosensitive music box -
The photosensitive resistor is used to sense the light intensity of the player's environment, control the volume and rhythm of music according to the light intensity, sense the position of the player and the acceleration value of the position change using the six axis sensor, and determine the order of the player playing music according to the information of the six axis sensor. The music of the player is stored in the sD card to facilitate the replacement of audio files in the sD card. I want to participate in mastering the M4, M3 core STM32 single chip microcomputer and cooperate with laboratory personnel to complete two products with STM32 single chip microcomputer as the core, which have been put into industrial use. Three other partners of the laboratory said that I would support the project, but did not write specific implementation methods. I wanted to make sure -
Xiong Ying Waiter stm32/stm8
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What is the meaning of pcb solder mask window? The reason of window opening of PCB solder mask -
The concept of solder mask is soldermask, which refers to the part of printed circuit board to be painted with green oil. In fact, the solder mask uses negative output, so after the shape of the solder mask is mapped to the board, the solder mask is exposed instead of green oil solder mask. The process of solder mask requires that the solder mask plays an important role in controlling the welding defects during reflow soldering process. PCB designers should try to reduce the spacing or air gap around the pad features. Although many process engineers prefer the solder mask layer to separate all pad features on the board, the pin spacing and pad size of closely spaced components will require special consideration. Although the opening or window of the solder mask not zoned on the qfp on the four sides may be -
CITIC China PCB design
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I am speechless What language is c #?! help me! -
Now the problem of serial port data loss has been solved, but a new problem has emerged. That is, once some C # programs are run, my serial port will be garbled immediately. It has been proved by many practices that this C # has nothing to do with serial ports. The operation serial port is not opened at all. How did this happen—————————————————————————— The above phenomenon proves that once this c # is running, the baud rate register of my 2440PDA external serial port is accidentally modified. But as far as I know, this c # cannot directly operate the hardware?! I don't understand c #. When I asked the application, they said that c # memory is not like C++, and memory is automatically recycled. This is a serious problem -
someoneelse Embedded system