Before purchasing an oscilloscope, it is essential to understand your product and determine what type of equipment you need based on the objects you intend to test. It’s not necessarily true that the more advanced the equipment, the better the product will be. Previously, some netizens summarized 10 suggestions, which I personally think are quite … Read more
*Author:Xue Bi 0xroot @ Vulnerability Box Security Team 0×01 Signal Capture In this article, we will demonstrate a wireless replay attack on a wireless egg vibrator of a certain brand model using GnuRadio and SDR hardware. The common frequency bands for wireless remotes in the market typically operate at 315MHz, 433MHz, and a few may … Read more
Some signal features are difficult to determine in the time domain, but can be easily analyzed in the frequency domain. For example, the noise characteristics of a DC power supply require the use of Fourier analysis to convert time-domain signals into frequency-domain signals. The ZDS2022 oscilloscope features up to 4Mpts of FFT analysis sample points, … Read more
1. Core Differences Between DC Coupling and AC Coupling 1. DC Coupling Operating Principle: The signal (including both DC and AC components) is directly input to the oscilloscope without filtering. Characteristics: Completely retains the DC offset of the signal (such as static voltage) and AC fluctuations (such as ripple). Displays absolute voltage values (e.g., 5V … Read more
This article provides a detailed explanation for students who are using or learning about oscilloscopes for the first time.Introduction to Oscilloscopes – Detailed Steps for First-Time Use. 1. What is an oscilloscope used for?? An oscilloscope is an instrument used to observe the relationship between the voltage of electrical signals and time, used for analyzing … Read more
Wu Jianying Microcontroller Development Board Address Store: 【Wu Jianying’s Shop】 Address: 【https://item.taobao.com/item.htm?_u=ukgdp5a7629&id=524088004171】 The oscilloscope is an essential instrument in modern home appliance repair. With it, technicians can quickly and accurately locate faults, so mastering the correct and proficient use of an oscilloscope is a required course for appliance repair technicians. Although there are many brands, … Read more
Follow usLearn Embedded Together and grow together The core of a timing diagram is the relationship between time and the level changes. Time progresses from left to right, and levels are represented as high or low, typically denoted by 0 and 1. A timing diagram helps us understand the changes of various signals in a … Read more
Follow【Plain Embedded】to receive exciting updates first Basics of SPI Protocol SPI (Serial Peripheral Interface) is a synchronous serial communication interface developed by Motorola, widely used in embedded systems to connect microcontrollers with various peripherals (such as Flash memory, sensors, display modules, etc.). 1.1 SPI Signal Lines The SPI bus typically includes the following four signal … Read more
✅ Author Profile: A Matlab simulation developer passionate about research, skilled in data processing, modeling simulation, program design, complete code acquisition, paper reproduction, and scientific simulation. 🍎 Previous reviews, follow the personal homepage: Matlab Research Studio 🍊 Personal motto: Investigate to gain knowledge, complete Matlab code and simulation consultation available via private message. 🔥 Content … Read more
This is a portable IoT display project that can be developed into various practical tools using the Arduino_GFX library, such as WiFi signal analysis and electronic photo albums. With a well-designed 3D printed case, it can be easily attached to a keychain or backpack for portability. Materials List TTGO T7 V1.0 (ESP32 WiFi Module) × … Read more