Invisible Moons

Category: FPV

  • How to Configure a Quectel EC20 LTE Module on Your SSC338Q Camera for Remote Access

    If you’re building a remote surveillance system, giving your camera cellular connectivity with a Quectel EC20 module is a powerful upgrade. Once configured in ECM (Ethernet Control Model) mode, the module acts like a virtual Ethernet card, pulling an IP address directly from your mobile carrier.

    This guide will walk you through the setup process on an SSC338Q-based camera. A key pro tip: we’ll configure a VPN like WireGuard or ZeroTier first. This crucial step will save you from being locked out of your camera once it switches to the cellular network, allowing for secure remote access without complex router configurations.

    Prerequisites & Planning

    1. Hardware: A camera with an SSC338Q chipset and a Quectel EC20 module (specifically variant 0x2c7c:0x0125).
    2. Initial Access: Physical access to the camera or a connection to its local network for the initial setup.
    3. VPN Setup: A configured VPN server (e.g., WireGuard or ZeroTier) installed on a cloud server, Raspberry Pi, or your local network. Ensure your camera can reach it and that you know how to connect your laptop to it.

    Why VPN First? Once the EC20 module is active, your camera’s network interface will change. It will be on your ISP’s cellular network, not your local Wi-Fi. Without a VPN already running on the camera, you will have no way to SSH into it to complete the setup. The VPN provides a secure “tunnel” back to your device.

    Step 1: Verify EC20 Module Detection

    Start by establishing an SSH connection to your camera over your local network.

    Run the lsusb command to list all connected USB devices. You should see a line identifying your Quectel module:

    bash

    ssh root@your-camera-local-ip
lsusb

    Expected Output:
    Bus 001 Device 003: ID 2c7c:0125 Quectel Wireless Solutions Co., Ltd. EC20 LTE modem

    If you don’t see this device, stop here. Check your USB connections, cables, and power supply to the EC20 module.

    Because the new config has been added so step2 is no longer needed.

    Step 3: Apply the Configuration and Reboot

    Now, we tell the system to use our new ec25 configuration and reboot.

    1. Set the boot environment variable:fw_setenv wlandev ec25
    2. Reboot the camera for the changes to take effect:reboot

    ⚠️ Important Note: After rebooting, the camera’s USB interface (usb0) will be assigned a static IP address: 192.168.2.10. To maintain SSH access during this phase:

    • You must set your computer’s Ethernet IP address to 192.168.2.1 (subnet 255.255.255.0).
    • Connect directly to the camera’s USB port or via a router configured for the 192.168.2.x subnet.

    Step 4: Final Verification and VPN Connection

    1. After the reboot and reconnection (via the 192.168.2.10 IP), SSH back into the camera.
    2. Run ifconfig. You should now see a new network interface (likely usb0 or wwan0) that has obtained a public IP address from your cellular ISP. This means the EC20 module is working correctly!
    3. Connect via VPN: Since you pre-configured your VPN, simply activate the VPN connection on your laptop. You should now be able to SSH directly to the camera’s VPN IP address from anywhere with an internet connection, no longer needing the 192.168.2.10 workaround.

    Troubleshooting and Reverting

    • Something went wrong? If the configuration fails and you lose access, you may need a serial console connection to revert. If you can still access the camera, you can clear the wlandev setting:bashfw_setenv wlandev rebootThis will tell the camera to bypass the EC20 setup on the next boot.
    • No Internet on EC20? Check your APN settings. You may need to use udhcpc or additional scripts to handle the DHCP client process on the usb0 interface.

    By following these steps and planning with a VPN, you’ve created a robust, remotely accessible cellular camera. Happy monitoring!

  • Protected: FPV over Celluar

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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.

  • 图传系统总结

    405491113_1077249653292422_6365736064413115025_n.jpg

    嗨JB，你对蜗牛数字图传系统大体怎么看？你觉得它在性能和质量方面都比DJI强吗？我在用V1眼镜并正在找一个相对紧凑的。我应该直接上G2而不是蜗牛吗？
    或者再等等,DJI在2024年发布的新眼镜？我不着急。我经常旅行所以我想减少点重量且方便携带。爱听你的想法。

    JB：

    我不觉得蜗牛比DJI好（总体上）。我个人的看法是，蜗牛和DJI v2/vista 系统在同一水平上或者还差一丁点儿。和O3则差一个档次~

    但是蜗牛有其它的很多优点比如 1S 图传，HDMI输出等。然后图传距离和穿透性也已经足够好即便可能不如DJI。所以它对很多人来说仍是个不错的选择，可以考虑。

    以上是最近看见的一个对话，可以说JB的回答很实际了。
    就像之前我发的一些看法一样。我做了一个表格：

    屏幕截图 2023-12-05 161310.png

    关于延迟，对于我个人的经验来说，基于网络多人测试的共同结果，肥鲨HDO2模拟眼镜大约有15毫秒的延迟，盒子眼镜大概有25ms以上的延迟，摄像头有3-25毫秒左右的延迟，我使用的CCD典型延迟是16毫秒。所以我之前练习的图传总延迟是在30-40毫秒区间，这个范围我感受不到延迟。当使用某盒子眼镜和延迟较大的摄像头平头哥时我能明显感觉到延迟的增加，但流畅度不受影响。更多的设备延迟测试可以搜索网络，几个著名的UP主都有。而较快的竞速摄像头一般延迟在2-3毫秒，加上眼镜15毫秒，总延迟在20毫秒以内。HDZERO的总延迟在15毫秒左右，这也是为什么HDZERO可以成为竞速系统。

    MIT一小组发现大脑最快13毫秒感知画面