A Japanese Twitter user, Mizutori (@minadorin), had a broken SD storage card and, out of curiosity, decided to disassemble it to see its internal structure, only to be quite shocked by what he found. Do you understand? No worries, let’s start from the beginning. This card (now disassembled) is from the nearly 30-year-old Japanese local … Read more
Many high-end MicroSD (TF) cards claim to have read speeds exceeding 90MB/s, but in actual use, the speed is often found to be only half or even lower than the claimed value. So, who is affecting the performance of the storage card? Understanding the Parameters of Storage Cards With the popularity of smartphones and tablets, … Read more
Some users may have had this confusion: wanting to add an SD card to their phone but not knowing how to choose one. There are many types of MicroSD cards on the market, but not every card is suitable for our Android phones and tablets. Here, how do we choose between SDHC, SDXC, Class 10, … Read more
The S7-200 SMART CPU supports commercial MicroSD cards (with capacities of 4G, 8G, and 16G), which can be used for program transfer, CPU firmware updates, and restoring the CPU to factory settings. Open the terminal cover above the digital output points on the CPU body, and you will see a card slot on the right … Read more
An SD card, short for Secure Digital Card, is a new generation of memory device based on semiconductor flash memory, and it is a type of portable storage device. Below is a detailed introduction to SD cards: 1. Main Features 1. High Storage Capacity: SD cards have a large storage capacity, which can meet the … Read more
The NVIDIA® Jetson Nano™ Developer Kit is a small AI computer suitable for manufacturers, learners, and developers. Although the performance of the Nano has been significantly reduced, it can still compete with TK1 and TX1, while easily outperforming Raspberry Pi and other similar devices. It is truly an essential tool for low-cost navigation, artificial intelligence, … Read more
Introduction I previously envisioned a mobile storage device based on the ESP32, and now I am attempting to create a prototype. The first step, I believe, is to design a dedicated PCB. I previously used an ESP32S3 development board to test how to run WebDAV, but the flash memory on the development board only has … Read more