😱 Conclusion First No antenna installed = Motherboard at full power “roaring” = 2.4GHz chaos = Bluetooth dies instantly. 📉 A Real Tragedy Fan @A-K: “Win11 + Sony WH-1000XM4, within 3 meters the sound is choppy like a PowerPoint presentation, changed drivers, reinstalled the system, even bought a new headset, 799 yuan wasted. Finally, the … Read more
Yesterday, I found a bridge under my bed, which I must have impulsively bought online but never got around to disassembling; I just opened it up to take a look at the structure. The internal circuitry is simple, but quite a bit of thought went into the structural design.1. Appearance2. I was too lazy to … Read more
Source: https://www.cypress.com/ Translated and organized by RF Academy, for learning purposes only. Hello everyone, this is 【RF Academy】. Today we will learn together about Cypress’s “Antenna Design and RF Layout Guide.” If you need the original document, please leave a message at the end. This guide explains antenna design in simple terms and provides guidelines … Read more
Bluetooth has always been a standard feature for smart devices, whether it be smartphones, laptops, or tablets. With the development of mobile internet, a large number of smart wearable devices have emerged, and the development of these applications requires not only mobile software support but also support from wireless sensing technology. Bluetooth remains the preferred … Read more
1. What is the 433m Wireless Module The 433MHz wireless transceiver module uses high-frequency RF technology, also known as the RF433 radio frequency small module. It consists of a single IC RF front end produced by All Digital Technology and an ATMEL AVR microcontroller, capable of high-speed data signal transmission. This miniature transceiver packages, error … Read more
1. Layout Specifications for the WiFi Module Circuit: The layout of the WiFi module should be kept away from the main control CPU and DDRAM and other high-speed digital devices to avoid mutual interference of high-frequency digital signals; The layout area of the WiFi module should include the bottom layer, avoiding the placement of other … Read more
With the trend of the Internet of Things, wireless communication modules have become an indispensable part of various electronic devices, and the communication quality of the modules largely depends on the rationality of the antenna design. This article introduces how to choose the appropriate antenna and maximize its performance. Reference for this article: http://www.21ic.com/app/rf/201803/755820.htm With … Read more
The communication distance of wireless modules is an important indicator, and how to maximize effective communication distance has always been a puzzling question for many. This article provides some explanations based on debugging experience and methods for selecting and using antennas, hoping to assist engineers in quickly debugging communication distances. 1. Types of Antennas With … Read more
I previously open-sourced the ESP32C3WROOM board, and today I’m open-sourcing the ESP32C3FH4. You can directly obtain the engineering files at the Lichuang Open Source Square. https://oshwhub.com/zctnb/works Actually, the chips are the same, but the ESP32C3WROOM is a module, while the ESP32C3FH4 is a chip that integrates 4MB of flash. Let me explain for those who … Read more
DIY a multi-band vertical portable antenna, click the video to learn more↓↓↓ 【Ham DIY】Spent less than 10 yuan to create a second-hand car intercom system, giving new life to abandoned intercoms 【Ham DIY】How to build a V dipole antenna to receive meteorological satellite cloud images 【Ham DIY】Refrigerator ground network and butter cookie box signal booster, … Read more