Wireless Bluetooth headphones have become very popular in recent years. Many people have purchased a pair. But did you know? They can also pose safety risks! Related Cases On October 9, 2022, in Jiaxing, Zhejiang, a surveillance video captured a thrilling moment: a man was busy when suddenly the Bluetooth headphones he was wearing on … Read more
Author: Xiaoyu, Typesetting: Xiaoyu WeChat Official Account: Chip Home (ID: chiphome-dy) 01 Exposing Wires Inside the Chip Package We received a chip, and the core part of the chip is actually not as large as the chip itself. To facilitate the connection of numerous pins, an additional layer of packaging is added outside. Common types … Read more
In 1978, my family lived in a side room of a mud-brick thatched house, while my grandfather lived in the main house where a small radio, scientifically known as a reed horn, was mounted on the wall. Every morning and evening, it broadcasted announcements from the local brigade, news from the provincial radio station, and … Read more
1. IntroductionThe Wifi Robot: Essentially, it is a remote-controlled car that can be controlled remotely via the internet or a laptop’s wireless connection from up to 500 meters away. Equipped with a network camera, this car can be controlled beyond the line of sight, and it also has a speaker, allowing you to honk at … Read more
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Reply to the public account: Course to obtain resources Introduction to Integrated Circuit Application Development (Including Embedded Systems) for Beginners In the rapidly advancing technological landscape, integrated circuit application development, especially in the embedded field, has become a core support for many cutting-edge technologies. If you are curious about this fascinating field and eager to … Read more
Arduino Design Course (Part Four) The Dream Car Course Introduction No ceremony is needed to set off; the Dream Car has already started, and the future is promising. On April 18, 2025, the spring currents surged through the wires as thirty sixth-grade mechanical engineers from Shanghai Jiao Tong University Affiliated Second Middle School, filled with … Read more
Semiconductor target materials are critical raw materials in semiconductor manufacturing, and their importance is self-evident. Today, we will take a deep dive into the influential international and domestic companies in this field. 1. International Companies 1. JX Nippon Mining & Metals Founded in 1905, JX Nippon Mining & Metals is a giant in the global … Read more
【Click the above“blue text” to follow the DF Maker Community and become a tech aesthetician together】 The community public account records weekly shareable maker-related content, published every Friday～ Submissions or recommendations for related content are welcome. Submission email: <span>[email protected]</span> Hardware Neurons: Illuminate Robot Intelligence with Simple Circuits This project is actually a small robot experiment … Read more
Polarized components require special attention throughout the PCBA (Printed Circuit Board Assembly) processing, as incorrect orientation of polarized components can lead to mass failures and the complete failure of the PCBA board. Therefore, it is crucial for engineering and production personnel to understand SMT polarized components. 1. Definition of Polarity Polarity refers to the positive … Read more
During the production process of PCBA soldering, operational errors can easily lead to defects such as: cold solder joints, short circuits, component lifting, missing components, solder balls, component misalignment, excessive solder, incorrect components, cold soldering, reverse soldering, white/reverse side issues, misalignment, component damage, insufficient solder, excessive solder, solder sticking to gold fingers, and glue overflow. … Read more