Some Photos of Clouds Glowing with the Morning or Evening Sun, Sunsets and Sunrises Taken in 2024
【Casual Shots】Sharing some photos of sunsets, evening glow, and sunrises taken in 2024. The photos were taken with the
AkileCloud UK VPS Review: 1 vCPU, 1GB RAM, 500Mbps Speed, Only ¥19.99/month, Native UK IP
AkileCloud's UK Lite2 cloud server offers native UK IP, AMD R9 7900 CPU, and 500Mbps bandwidth from ¥19.99/month. Benchmarks show strong single-core performance, with Geekbench 5 score 1831 and download speeds up to 475Mbps. Average latency to China is 249.3ms, with mixed routing across telecom, unicom, and mobile networks.
Free SSL Certificate Application, Renewal, and Auto Deployment with Wildcard Domain Support
The article introduces httpsok, a free SSL certificate application and auto-deployment platform supporting wildcard domains from ZeroSSL, Let's Encrypt, and Google. It enables one-command issuance, renewal, and deployment to CDN/OSS providers, plus certificate monitoring. The text also explains SSL certificate functions, types, and the application process, offering benefits like automated management and free quotas. An alternative service, OHTTPS, is also mentioned.
A Simple Unboxing and Review of EastTester(中创) ET4410 Desktop Digital LCR Meter
The article reviews the EastTester ET4410 LCR meter, purchased for 1,199 yuan. It outlines key specifications, including 10Hz-100kHz frequency, 0.2% basic accuracy, DCR and electrolytic capacitor modes, TFT display, and calibration functions. Practical tests show accurate measurements for resistors, capacitors, and inductors, though low-resistance readings are limited. A list sweep mode bug is identified, with a firmware update provided. Readers gain cost-performance insights, usage guidance, and awareness of measurement limitations when choosing this instrument.
STM32F407-Based LVGL Project Template for MSP3526 Screen (FreeRTOS and Bare Metal Editions)
Article presents porting LVGL to STM32F407 with a 3.5-inch MSP3526 LCD (ST7796, FT6336U) using SPI+DMA, providing FreeRTOS and bare-metal project versions. It covers wiring, performance figures (~9 FPS full-screen, >30 FPS partial after overclocking), code examples, and download resources, helping readers implement embedded GUI displays effectively.
STM32 based OLED screen driver with software or hardware I2C support (HAL library)
This article presents a complete STM32G474 HAL library driver for 0.96-inch SSD1306 OLED displays with 4-pin I2C interface, supporting both hardware and software I2C via simple macro configuration. It enables displaying English, integers, floating-point numbers, Chinese characters, images, binary and hex values, plus drawing points, lines, rectangles, circles, ellipses, and triangles with multiple fonts. Step-by-step STM32CubeMX setup instructions for both I2C modes are included, making integration straightforward.
Synchronous Rectification Buck-Boost Digital Power Supply Based on STM32
This article presents an open-source four-switch Buck-Boost digital power supply based on STM32G474, supporting Type-C PD and DC input up to 48V10A and 450W. It includes schematic, PCB, firmware, and 3D model files. The design offers adjustable output, OLED display, protections, and host monitoring, achieving up to 94.3% efficiency and low ripple. Users can access calculations and source code.