Imagine this: You are immersed in an intense game or focused on an important work document when suddenly, the monitor goes completely black while the host continues to run, the fan is whirring, and the indicator lights are flashing normally. At that moment, doesn’t it feel like the whole world has paused? This sudden black … Read more
In IoT applications, Bluetooth Low Energy (BLE) and the MQTT protocol play crucial roles. BLE allows devices to communicate wirelessly with low power consumption, while MQTT provides a lightweight publish/subscribe messaging protocol for communication between devices. The ESP32-BLE2MQTT project cleverly combines these two protocols, creating a powerful BLE to MQTT bridge that offers developers a … Read more
2016 Microcomputer and Applications Issue 3 Author: Yuan Qianqian Abstract: This article provides a detailed study of the computer boot process and system loading, combining the collaborative invocation mechanism between hardware and software. It presents a relatively complete discussion of the entire process from pressing the power button to loading the operating system, culminating in … Read more
Have you ever experienced the awkward moment when you eagerly turn on your computer, ready to start your day of work or entertainment, only to find the monitor is completely black while the computer is running normally, buzzing away? This “blind operation” can be frustrating, wasting our time and affecting our mood. Don’t worry, today … Read more
Recently, some fans have shown interest in a compact mini case – the Wan Jia Aluminum Element, and they want us to propose several mainstream computer configuration solutions for this case. The budget for the computer host is around 5000-6000 yuan, suitable for gaming and light productivity needs, while pursuing cost-effectiveness. Wan Jia Aluminum Element … Read more
Experimental Subject: Computer CPU Cooling Fan Brushless DC Cooling Fan (AFB0912VH) Signal Collection: Vibration Signal, Temperature Function: Research on the fault diagnosis of computer CPU cooling fan bearings; Research on the gradual evolution of faults in computer CPU cooling fan bearings. Test Bench: Key Component Parameters: Collection Component List: Serial Number Component Name Model 1 … Read more
The scrapped computer optical drive should not be discarded; instead, disassemble the brushless motor and transform it into a high-speed cooling fan.
The ESP32 chip, known for its powerful capabilities and low cost, has become the preferred choice for IoT developers. However, updating device firmware often requires physical contact, significantly increasing maintenance costs and inconvenience. To address this issue, the ESP32_BLE_OTA_Arduino library was born, providing a convenient and efficient Bluetooth Low Energy (BLE) wireless firmware upgrade solution, … Read more
The MPU (Memory Protection Unit) is an optional module in the Cortex-M core, allowing memory mapping (including Flash, RAM, and peripherals) to be divided into several regions, each assigned different access permissions. FreeRTOS-MPU is a secure version of FreeRTOS designed for MPU, supporting microcontrollers with ARMv7-M (Cortex-M3, Cortex-M4, and Cortex-M7) and ARMv8-M (Cortex-M23 and Cortex-M33) … Read more
The first one, 6800H ES mini PC, barebone version Price is 1499 yuan, after stacking orchard/ranch coupons, can be purchased for as low as 1399 yuan. The only downside is the use of an ES processor, but it is precisely because of using the ES engineering version processor 【ES is a testing version processor, stability … Read more