Invisible Moons

  • 为什么手机或电脑用英文

    很简单，中国不是地球上唯一的国家，如果你想在某个领域跟上时代，就一定要获取世界范围内的资料。而英语是应用最为广泛的语言。英语的词汇量非常大，而一门外语如果没有机会使用就容易忘，所以最好的办法就是每天都接触它，现在你知道真正的原因了。

    AI时代，每个人都可以更自信地使用一门外语了,AI最大的长处就是语言系统。

    记得，真正的间谍会比你更“爱国”,如果手机系统是英语，那也应该是非英语国家的间谍才更合理。

  • 在Radxa Zero 3上运行deepseek

    在Zero上编译非常痛苦，所以使用交叉编译：

    安装步骤
    更新包列表：

    sudo apt update
    安装交叉编译工具链：

    sudo apt install gcc-aarch64-linux-gnu g++-aarch64-linux-gnu
    //gcc-aarch64-linux-gnu：ARM64架构的C编译器。

    //g++-aarch64-linux-gnu：ARM64架构的C++编译器。

    验证安装：

    aarch64-linux-gnu-gcc –version
    aarch64-linux-gnu-g++ –version

    1. 设置交叉编译环境
      在项目目录中创建一个 toolchain.cmake 文件，用于指定交叉编译工具链。

    创建 toolchain.cmake 文件
    cmake

    toolchain.cmake

    set(CMAKE_SYSTEM_NAME Linux)
    set(CMAKE_SYSTEM_PROCESSOR aarch64)

    set(CMAKE_C_COMPILER /usr/bin/aarch64-linux-gnu-gcc)
    set(CMAKE_CXX_COMPILER /usr/bin/aarch64-linux-gnu-g++)

    set(CMAKE_FIND_ROOT_PATH /usr/aarch64-linux-gnu)
    set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
    set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
    set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)

    1. 交叉编译项目
      使用交叉编译工具链编译项目。

    步骤 1：生成构建文件

    cmake -B build -DCMAKE_TOOLCHAIN_FILE=toolchain.cmake
    步骤 2：编译项目

    cmake –build build –config Release -j 2
    步骤 3：验证编译结果
    检查生成的可执行文件是否为ARM64架构：

    file build/my_program
    输出示例：

    build/my_program: ELF 64-bit LSB executable, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for GNU/Linux 3.7.0, not stripped

    1. 将程序复制到RK3566
      使用 scp 或U盘将编译好的程序复制到RK3566上运行。

    使用 scp 复制

    scp build/my_program user@rk3566_ip:/path/to/destination
    在RK3566上运行

    ./llama-server -m DeepSeek-R1-Distill-Qwen-1.5B-Q4_K_M.gguf –host 0.0.0.0

    使用精简蒸馏模型DeepSeek-R1-Distill-Qwen-1.5B-Q4_K_M.gguf

    结果还是非常意料之内的，缓慢无比。0.2 t/s

  • Radxa 3w zero connect wifi before login

    So here is the thing:
    I want to use one of my radxa 3w zero to be a light server, but for some reason their CLI version can not start up, which is insane. And I tried, it just stuck at the beginning.

    So I uninstalled the xfce of debian-xfce version. And everything I need were working properly.
    Except the Wi-Fi. It only connects when I login.

    I have tried several methods. And finally.

    At /etc/NetworkManager/system-connections/mywifi.nmconnection

    Then disable the line “permissions” and it works.

  • Protected: My gears

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  • About DJI goggles 2

    There are a lot of reviews and opinions regard this product. But I think it is not enough.
    I found something really annoying about this thing when I once had one. And no one talked about it.

    Back in the day, SAMSUNG was a relatively popular brand in China(I barely see them now). And they produced the product AMOLED panel since then. This thing was used on their phones for a long period, and many people had told me how good it was, but as you may know, the real decent generation of their AMOLED screen was just came out several years ago, when Apple decided to use it. I then found they finally could be accepted by myself — their pentile OLED is finally being small enough and not that easier to be noticed. So I bought my very first Samsung phone – S23.

    So what I’m trying to express is that DJI goggles 2(including integra), has exactly the PenTile pixel screen panel in it(Turns out its not exactly the same but likely). It looks just sucks to me. These pixels just keep stabbing my eyes.

    Sorry DJI. I mean it. But it is what it is. I don’t want to talk about the dead pixels. It all about PenTile pixels. Yes, I can also notice some flick of black out of the screens, but I think all the 1080p oled screens have that issue.

    You can read more about PenTile OLED here : https://www.oled-info.com/pentile

    I can’t use it anymore. Maybe the next generation.

    P.S.: Turns out it is something like hexagon pixels.

    ≈==================≈=Better version From Copilot ===

    Here’s a more natural version of your content:

    There are many reviews and opinions about this product, but I think they don’t cover everything.

    I found something really annoying about this device when I owned one, and no one else seems to mention it.

    A few years ago, SAMSUNG was quite popular in China (I barely see them now). They produced AMOLED panels for their phones for a long time. Many people told me how good the screens were, but as you may know, a truly decent generation of their AMOLED screens only came out a few years ago when Apple decided to use them. That’s when I found them acceptable — their PenTile OLED finally became small enough that the pixels weren’t as noticeable. So, I bought my very first Samsung phone, the S23.

    What I’m trying to say is that the DJI goggles 2 (including Integra) have a PenTile pixel screen panel (not exactly the same, but similar). To me, it looks terrible. These pixels just keep straining my eyes.

    Sorry, DJI. I mean it. But it is what it is. I don’t want to talk about the dead pixels. It’s all about the PenTile pixels. Yes, I can also notice some flickering black spots on the screen, but I think all 1080p OLED screens have that issue.

    You can read more about PenTile OLED here: https://www.oled-info.com/pentile

    I can’t use it anymore. Maybe the next generation will be better.

    P.S.: It turns out the pixels are arranged in a hexagon pattern.

    I hope this version sounds more natural to you. If you need any more help, feel free to ask!

    ========From Deepseek ========

    Here’s a more natural and polished version of your text:

    There are plenty of reviews and opinions about this product, but I don’t think they tell the full story. When I owned one myself, I encountered a major annoyance that no one seems to mention.

    Let me give some context. There was a time when Samsung was fairly popular in China (though you barely see them here now). They’ve been producing AMOLED panels for years, which were used in their phones for a long time. Everyone kept praising how great these screens were, but honestly, Samsung’s AMOLED didn’t truly hit its stride until a few years ago—around the time Apple started using them. That’s when I finally felt the screens were good enough for me: their PenTile OLED layout finally became fine enough that the pixel structure wasn’t glaringly obvious. That’s actually why I bought my first Samsung phone, the S23.

    So here’s my point: the DJI Goggles 2 (including the Integra version) use what appears to be a PenTile-style pixel arrangement (not exactly the same, but similar). And to me, it looks awful. The pixel structure feels like it’s constantly straining my eyes.

    No offense to DJI—I respect their work—but this is a real issue. And I’m not even talking about dead pixels here; this is purely about the PenTile layout. Sure, I’ve also noticed some screen flickering and blackout flashes, but I’ll concede that’s a common problem with 1080p OLED screens in general.

    For more details on PenTile OLED, check out this explainer: https://www.oled-info.com/pentile

    Unfortunately, I just can’t use these goggles anymore. Maybe next generation?

    Changes made for clarity and flow:

    1. Softened abrupt transitions between ideas.
    2. Added conversational phrases (“Let me give some context,” “honestly,” “No offense”) for natural tone.
    3. Fixed minor grammar issues (e.g., “just came out” → “hit its stride”).
    4. Clarified the connection between Samsung’s AMOLED evolution and the DJI critique.
    5. Added emphasis (truly) to highlight key points organically.
    6. Simplified repetitive phrasing while maintaining your voice.