@AugustRobot_Zou
可以，但是比较麻烦，需要改loader uboot kernel，现在扩展口上面串口不够用吗？

@igorp
I'm very glad you could provide help. Thank you.

@wangyx
参考如下文档有格式和对齐要求：
https://github.com/airockchip/librga

@S199pWa1k9r
Thank you for your suggestion. The main reason for choosing this shell is due to structural limitations. As our machine is designed with a core board and bottom board, the overall height will be higher than that of the single board method. At present, the metal shells on the market cannot meet the structural requirements.
We have conducted an evaluation on the heat dissipation, and the current heat dissipation method is to add graphene to the copper skin on the back. The temperature rise during normal video playback can be controlled to around 30 degrees Celsius.

@jugg 升级uboot需要进入loader模式或者maskrom模式，不是UMS

@veryy 把内核更新到最新版本。提供一下dmesg信息。

@mtiqbal 123

@qys2022 没有反。

@阿里
C2891521_金手指连接器_AS0B821-S55B-7H_规格书_FOXCONN(富士康)金手指连接器规格书.PDF

@jugg 这个应该是系统自带的，网上找一下如何关闭。

@maxpol
Refer to the following documents：
https://www.cool-pi.com/topic/70/coolpi-4b硬件扩展三-i2c?_=1695004097775

@maxpol I2C3 I2C5 cannot be changed to other pinsOf course, you can try opening other I2C channels.

@etrin

1. troubleshoot the power issue and try playing a network video to observe if there is a restart phenomenon.

2. If you have a debug serial port board on hand, you can try monitoring the log information. And submit it to the community for our analysis.

@qys2022 不使用PCIE3.0可以不用。

@fetsch Burn in the same way as other images, such as using an etcher.

@Orion 参数如下帖子处理，增加规则文件
https://www.cool-pi.com/topic/136/coolpi-4b-python3-gpio-operation-compatable-with-raspberry-pi/21?_=1694425872738

@fetsch coolpi:coolpi 或者coolpi:123

• Run the following command

sudo dpkg-reconfigure locales

• Pop up a dialog box and select according to the following figure
  

• Confirm and restart the system to switch to English language
  

@jugg 还是以CM5为主，现在研发都投入到CM5定制化产品和软件维护。暂时没有计划开发新的核心板。

@jugg 不好意思，暂时没有。