wifi

ubuntu系统烧入后,u盘编辑network-config文件,wifi部分修改为,开机后,等待5分钟,断电重启,会自动连接wifi:

wifis:
  wlan0:
  dhcp4: true
  optional: true
  access-points:
    "home network":
      password: "123456789"

树莓派ubuntu 清华源

# /etc/apt/sources.list默认注释了源码镜像以提高 apt update 速度，如有需要可自行取消注释
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal-updates main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal-backports main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal-backports main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal-security main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ focal-security main restricted universe multiverse

树莓派qtcreator安装

sudo apt-get install build-essential libssl-dev nmap g++ cmake automake
sudo apt-get install qt5-default qtcreator qtmultimedia5-dev libqt5serialport5-dev qtdeclarative5-dev qt5*  qml-module-* pyqt5* python-nose python-empy

sudo apt-get install build-essential libssl-dev nmap g++ cmake automake qt5-default qtcreator qtmultimedia5-dev libqt5serialport5-dev qtdeclarative5-dev qt5*  qml-module-* pyqt5* python-nose

将树莓派 4B 变为路由器 – 升级版 – 禁用 RTL8812AU 的省电模式 – ZUIcat的文章 – 知乎

https://zhuanlan.zhihu.com/p/439341271