Introduction “We are not building devices; we are writing the game theory of the electromagnetic space.” The evolution of radar technology is essentially a wireless cycle of “perception-deception-countermeasure.” In modern warfare, mastering a more advanced “electromagnetic eye” illuminates victory amidst the fog of battle. In July 2024, Russia’s Kh-35 missile precisely destroyed Ukraine’s Skala-M and … Read more
In electronic circuit design, the Bode plot is an essential tool for analyzing the frequency characteristics of circuits. However, professional instruments often start at a high price, making them unfriendly for beginners and makers. Today, we present a low-cost, easy-to-use open-source project— based on the STM32G031 microcontroller, which accurately collects analog signals through ADC and … Read more
â–² For more exciting content, please click the blue text above to follow us! Nowadays, the variety and quantity of sensors are increasing, and many of these sensors utilize analog signals, which rely on ADC. However, the analog signals collected by our microcontroller’s ADC generally undergo “filtering” processing before they can be used. Below, we … Read more
Arduino Lesson 6: Digital Signals Rubin said April 21, 2025 11:56 Qinghai 01Analog SignalsAnalog signals: are information expressed by continuously varying physical quantities, also known as continuous signals that have multiple different values within a certain time range.During the transmission process, the information signal is first converted into an electrical signal (hence called “analog”), and … Read more
Random signals cannot be represented by deterministic mathematical relationships and cannot predict their future instantaneous values. Any observation only represents one of the possible outcomes within its range of variation, and its value changes according to statistical laws. It is not a deterministic function of time, and there is no definite function value at any … Read more
In the era of the Internet of Things, how can we meet the demand for small data and large connections in IoT, allowing massive devices to “last longer and transmit further”? The low-power wide area network (LoRa) technology is becoming a core answer for large-scale IoT! However, existing technologies still face three major challenges in … Read more
A camera module is a functional module that integrates components such as an image sensor, lens, and signal processing circuits, used to capture and process image or video information. It is widely used in various fields such as smart homes, intelligent transportation, smart agriculture, and security monitoring. Below is a detailed introduction to its working … Read more
Click the blue text to follow! Old Li Talks Technology: PLC Function Blocks Make Automation Debugging Painless 1 The Emergency Repair in the Workshop Last Thursday, the automated production line in the injection molding workshop had another issue. Xiao Wang rushed to find me: “Old Li, the No. 3 injection molding machine has stopped, the … Read more
So far, the research on hardware development and software implementation of aerospace-grade DSPs in China, as well as on-orbit data reliability, single-event upset effects, real-time monitoring of functional anomalies, and on-orbit maintenance, is still immature and requires further exploration. DSP (Digital Signal Processor) is a microprocessor chip specifically designed to implement signal processing algorithms. Aerospace-grade … Read more
The rapid development of the Internet of Things (IoT) has exceeded the imagination of almost everyone, with thousands of devices connecting to the network every day. In the face of such enormous market demand, traditional technologies have long been overwhelmed, while the new generation of digital signal processing (DSP) requires higher computational power and lower … Read more