Starting this week, Xiaoquan officially launches the “GitHub Project Selection Weekly” plan, which selects some fun, interesting, practical, and advanced open source projects that Xiaoquan has encountered or recommended by big players in the industry, and shares them in the form of weekly articles. For everyone to watch and learn, hoping to learn and make […]
Tag: digital
Temperature smoke fire alarm system based on 51 microcontroller – digital tube display
Temperature smoke fire alarm system based on 51 microcontroller (Simulation + Program + PCB + Design Report) Function introduction Specific functions: 1. The smoke collection sensor uses MQ-2. Since the sensor outputs an analog signal, the analog-to-digital conversion chip ADC0832 is required to convert the analog signal into a digital signal and then transmit it […]
Decimation and interpolation in digital signal processing
Directory Preface 1. Extraction 1.1 Overview of extraction principle 1.2 Spectrum analysis of the extracted signal 2. Interpolation 2.1 Overview of interpolation principles 2.2 Spectrum analysis of the interpolated signal 3.MATLAB simulation Foreword Hello everybody! This is Xiao Rui. This article will introduce the related content of extraction and interpolation. 1. Extraction 1.1 Overview of […]
Interpretation of CCC Digital Key 3.0 Standard (8)
Article directory 6.3.4 Phase 3: Second NFC session 6.3.4.1 Steps 3~12: Standard interaction 6.3.4.2 Steps 11~12: (Optional) Provide disabled friend anti-theft token 6.3.4.3 Steps 13~14: CONTROL FLOW 6.3.4.4 Step 15: Key Tracking Request 6.3.4.5 Configuration of contactless interactions 6.3.4.6 Error handling for the second NFC session 6.3.5 Phase 4: Finalizing the pairing process (optional) 6.3.5.1 […]
[Opencv-Python] Digital image processing (2) – Spatial image processing (1)
>Article navigation 1 Experimental purposes and requirements 2 Experimental environment and configuration 3 Experimental content and experimental results 3.1 Grayscale transformation 3.1.1 Binarization of grayscale images 3.1.2 Image inversion 3.1.3 Logarithmic transformation (1) Try different values of scale proportionality constant c (the above program sets c=42), compare and analyze the differences in the resulting images. […]
Digital signal processing experiment 2: time domain sampling and frequency domain sampling
Experimental content Experimental purpose Time domain sampling theory and frequency domain sampling theory are important theories in digital signal processing. It is required to master the changes in the spectrum of analog signals before and after sampling, and how to choose the sampling frequency so that the sampled signal does not lose information; it is […]
[Digital Analog] [Modeling and Implementation] Interpolation Fitting
1. Basic knowledge What is 1.1 Interpolation–data analysis method: can be used to supplement data Fitting–Linear regression is a kind of fitting Fitting refers to building a model based on known data points that best matches these data points. In statistics and machine learning, fitting involves adjusting the parameters of a model so that it […]
Static display and dynamic display of LED digital tube (Keil+Proteus)
Foreword I was reading the microcontroller experiment in the book today, and found that there are many devices that I don’t know how to find in Proteus, so I wanted to do this experiment to see if it can be implemented. The two LED digital tubes can still be implemented, but using LED I don’t […]
CSS restores the digital animation of the Las Vegas ball
Recently, everyone has been using Douyin. Have you seen the new landmark “Sphere” in Las Vegas: The visual effects inside the venue are amazing, and one of them shocked me: My first thought was, does it seem like this can be achieved using CSS? Is there anything that CSS can’t do? In this article, we […]
8. ADC analog-to-digital converter (STM32)
1. Principle (1) Overall version Regarding the principle of ADC, I will directly use the notes of the boss here. He wrote it for the 32 of the STM32F407VET6 model. Different models have different knowledge of ADC principles. Just use it as a reference to deepen your impression of ADC. http://t.csdnimg.cn/NsRwThttp://t.csdnimg.cn/NsRwT (2) With STM32 Jiangxie […]