2025 - Page 66 of 85

Trimming Methods and Differences of Embedded Linux Kernel and Uboot

This section only records the general trimming method without introducing specific file modifications.

Linux Kernel Trimming Steps

1 Modify the ARCH and CROSS_COMPILE environment variables in the makefile

ARCH ?= arm
CROSS_COMPILE ?= XXX (your cross compiler)

2 Find the configuration file xxxdeconfig in the arch/arm/configs folder, and modify it appropriately. Run the following in the root directory:

make xxxdeconfig

3 Run make menuconfig in the root directory. If new content has been added in xxxdeconfig, Kconfig needs to be modified to match xxxdeconfig.

4 Run

2025-01-04

Building a Raspberry Pi 4B Home Server: A Guide to Setting Up an Open Source Free Jellyfin Private Cinema Using an Idle Laptop

Jellyfin is an open-source free private cinema (media management) system that helps us manage the film and television resources on our hard drive and add beautiful posters.

Jellyfin can record our playback progress; for instance, if a movie is played to 10 minutes and 20 seconds on device A, it can continue from the same point on device B.

Jellyfin has a complete user management system, allowing family members to have independent accounts without affecting each other's playback progress.

Jellyfin supports client playback

2025-01-04

Exploring Android 11: A Comprehensive Overview

This is the last article in the #11WeeksOfAndroid series. Thank you for exploring key areas of Android development with us over the past time. Let's review these exciting contents together:

#11WeeksOfAndroid
https://developer.android.google.cn/11weeksofandroid

Contacts and Identity

You can explore how to implement chat shortcuts and Bubbles through chat notifications. We also shared videos about new features in chat and other system UI updates, as well as the Contacts and Chat Developer Documentation. Finally, you can listen to the

2025-01-04

Key Features of ARM Cortex-M0

EMB(External Memory Bus)

-> Supports 16-bit data width

-> Supports synchronous or asynchronous timing mode control

-> Allows CPU code to run on external SRAM

-> Supports data reception and transmission using DMA buffering

-> Configurable timing cycle for address latch time and data access time

-> Supports SRAM, NOR/NAND-flash, LCD interface

CRC(Cyclic Redundancy Check)

-> CRC hardware engine

-> Supports 4 types of polynomials

CRC8 polynomial 0x07

2025-01-04

Practical Implementation: Installation of Inductive Loops in Parking Systems

41000+ security enthusiasts have clicked the blue words to follow

Click to enter the security group mini-program for more surprises!

When it comes to parking management systems, the first application should be in 2001, using SYRIS (希瑞) controllers, equipped with long-range card readers from Sains and barrier gates from Youchuang, achieving the

2025-01-04

Top 10 Mini Computers Under $5

According to reports from Zhongguancun Online: 20 years ago, computers were obviously expensive and bulky, but now many computers that are only palm-sized can meet mainstream applications, with prices as low as several dozen yuan. Here, we will review those compact, inexpensive, and well-performing mini computers. (Image from pcworld)
1. Raspberry Pi Series The Raspberry Pi is undoubtedly the pioneer of mini computers. Although it doesn't look like a traditional PC, or

2025-01-04

Challenges in Building CPU Ecosystems: A Review of China’s Current CPU Ecosystem Development

EETOP focuses on chips and microelectronics. Click on the blue text above to follow us.
Comprehensive summary from: New Intelligence, Economic Reference Report, EETOP
Making chips is difficult, making core chips is even more difficult, and making CPU chips that require an ecosystem is harder than everyone thinks! Without building a good ecosystem, even the best CPU will fail!
Next, we will review how the x86 and Arm ecosystems

2025-01-04

Mini PCs vs Laptops: Exploring Exciting Use Cases

Mini PCs have been around for many years, and many people have likely used Intel's NUC before, which continues to be updated. With Xiaomi releasing a similar mini PC, more ordinary users have become interested in this field. At least I used to use a laptop, but now I have two mini PCs. One is the Mingfan XH50G, used for Hackintosh; the other is the Xiaomi mini PC, which, although a rebranded NUC, I like for its all-in-one connectivity.
So, can

2025-01-04

How to Operate USB Read and Write with .NET6 and LibUsb on Raspberry Pi Zero 2 W (Ubuntu 22.04)

Initial Motivation
Friends who like electronics and DIY hardware should be familiar with Zhihui Jun, who regularly shares some fun hardware he has made. I was very interested in a desktop robot he previously made called ElectronBot, so I made one myself. At first, I only developed an upper computer software called Electronic Brain Shell, which you may have seen in

2025-01-04

Installing OpenWrt on HomeLab Development Board (ARM64) with PVE

NO.1
Image File
qcow2 image file
openwrt-armvirt-64.qcow2
NO.2
Upload File
qcow2 files cannot be uploaded to pve through webui
You need to upload it to the server using FileZilla
Remember, the path for the pve iso image folder is
/var/lib/vz/template/iso
The backup image data for pve is
Usually used to store the recoverable xxx.vma.zst files
/var/lib/vz/dump
2025-01-04

Year: 2025

Initial Motivation

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