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
Project finished product images: Bilibili video link: https://www.bilibili.com/video/BV1CQkTYzEQ9/?share_source=copy_web&vd_source=097fdeaf6b6ecfed8a9ff7119c32faf2 (Material sharing can be found at the end of the article) 01 — Project Introduction 1. Function Details STM32 Smart Wardrobe Functions are as follows: DHT11 detects temperature and humidity, sets thresholds for heating and ventilation RTC obtains real-time time and regularly performs UV disinfection Photoelectric sensor … Read more
●Mastering the HarmonyOS Development BoardHow to get started with HarmonyOS hardware development? How should the development board be utilized? Can beginners quickly get started?The HarmonyOS developer public account’s column 【Mastering the HarmonyOS Development Board】 is here! Each issue provides hands-on teaching, allowing you to start with the development board from scratch, and conveniently provides source … Read more
Background of the Issue Initial State: After re-flashing the Raspberry Pi system, the Touch Display 2 only shows the cursor and does not display the full desktop. During this process, a segmentation fault in libc-bin caused system instability. Prerequisites: Core Hardware List for Raspberry Pi Project 1. Raspberry Pi 5 ▪ Model: Raspberry Pi (16GB) … Read more
[Disassembly] Monument This is a low-power Bluetooth device, and this tiny circuit board integrates six types of sensors. Let’s see what it can transmit. ▽ It is called “Monument” because it looks like a stone tablet. ▽ Stripped of its fancy attire, revealing the transparent “xq underwear”. ▽ Shyly turning away. ▽ Screwless design for … Read more
Click the blue text to follow us 1. Material Selection: Balancing Protection and Feel 1. Silicone Material: Soft and Shock-Resistant, but Prone to Dust Silicone material has become a mainstream choice due to its softness and high elasticity, effectively cushioning against drops. Its skin-friendly texture is suitable for daily carry, but it should be noted … Read more
1. From “Bicycle” to “High-Speed Train”: A Leap in Speed The transmission speed of Bluetooth 4.0 is approximately 1 megabit per second (1Mbps), akin to delivering packages by bicycle, which can only carry a limited number of parcels at a time. In contrast, Bluetooth 5.0 boosts the speed to 2Mbps, similar to upgrading to a … Read more
Click the blue text above to follow us 1. Analysis of Required Core Certification Systems 1. CE Certification (Mandatory) ① RED Directive (2014/53/EU) Applicable Product Scope: All devices with Bluetooth, Wi-Fi, and other wireless communication functions. Key Testing Items: Immunity Testing: Stability of the device under electrostatic discharge (±8kV contact discharge) and conducted disturbances from … Read more
-Bluetooth Technology- The name “Bluetooth” is derived from King Harald Bluetooth of Denmark, whose proponents hoped it would play a significant role in the information industry. In 1994, Ericsson initiated research aimed at solving the wireless communication issues between mobile phones and external devices, which later evolved into the concept of wireless communication. In May … Read more
