This article is from the WeChat public account:Note Master, author: Lao Jia, original title: “China and the U.S. are Competing for this Trillion Dollar Market!”, cover image from: Visual China Note Master says: Yesterday, U.S. President Trump personally confirmed that the tariff rate on Chinese imports will not remain at the current level (145%), “it … Read more
Click the blue text above to follow us Data loss is a common and urgent issue in embedded systems during operation, especially in application scenarios involving frequent data writes (such as database operations). It manifests in various forms, from minor loss of the latest records to severe issues such as file name corruption, loss of … Read more
This article introduces some practical basic techniques for PCB-level hardware reverse engineering, which can be used by researchers and white hat groups to analyze unknown hardware. The hardware security laboratory operated by SEC Consult is part of the SEC Consult security lab. The research presented below is just the tip of the iceberg among many … Read more
From: CoolShell Link: https://coolshell.cn/articles/5388.html Original: https://www.elpauer.org/2011/08/the-most-stupid-c-bug-ever/ This article is based on “The most stupid C bug ever” and is quite interesting, so I am sharing it with everyone. I believe that even if you are an expert, you could make such a bug. Let’s take a look at the bug made by the author. First, … Read more
Click the “blue text” to follow us for more information Research Background All-perovskite tandem solar cells (TSCs) exhibit outstanding performance and broad application prospects. However, a significant challenge remains in narrowing the power conversion efficiency (PCE) gap between small-area and large-area (>1 cm²) devices, which has become a major obstacle to the commercialization of all-perovskite … Read more
Introduction The camera, as a standard feature of smartphones, has developed rapidly. Many manufacturers have launched phones that focus on photography and videography, achieving impressive sales. So, what secrets lie behind the camera, the key component affecting photo quality? This article will introduce some basic knowledge and structure of cameras. 1. Classification of Camera Modules1. … Read more
Unlock the versatile mini PC for 499 Yuan! ASUS Chromebox3 CN65 Review: A Myth of Quad-Core i7, Dual Systems, and Full Interfaces 1. The Underrated Mini Beast: Comprehensive Configuration Analysis The ASUS Chromebox3 CN65 was originally a ChromeOS device under the Google ecosystem, but after modifications by domestic tech enthusiasts, it has transformed into a … Read more
Whac-A-Mole Game Device Based on micro:bit The Whac-A-Mole game is familiar to everyone; it once became a sensation, whether in the form of a computer mini-game or a handheld toy, the presence of the Whac-A-Mole game is hard to miss. Today, we will utilize the wireless communication feature of the micro:bit to create a modular … Read more
Abstract:Robotic arms are widely used in the industrial field, with grasping and placing being a common task. To promote the development of numerous industrial tasks, especially in laboratory environments, it is essential to quickly build robotic arm prototypes. This study aims to design a small three-degree-of-freedom robotic arm for grasping and placing tasks using inverse … Read more
1. Dual Channel 232 Communication Circuit Three-wire connection method, corresponding to a female connector, operating voltage 5V, can use MAX202 or MAX232. 2. Transistor Serial Communication This circuit is built with transistors, simple and low-cost, but it works very well at low baud rates. 3. Single Channel 232 Communication Circuit Three-wire method, completely equivalent to … Read more