[RPi] Raspbian Lite with RPD/LXDE/XFCE/MATE/i3/Openbox/X11 GUI

這篇拯救了 GUI 嗎？
https://www.raspberrypi.org/forums/viewtopic.php?t=133691

[RPi] RPi + ROS

這篇應該很有參考價值
https://medium.com/@rosbots

[RPi] 好認真的同學阿

嗯嗯，好認真的同學
https://medium.com/@yanweiliu/raspberry-pi%E5%AD%B8%E7%BF%92%E7%9B%AE%E9%8C%84-76a3c976d0aa

[RPi] 截圖小工具

sudo apt-get install fbcat

sudo fbgrab -d /dev/fb1 ~/fb1.png
sudo fbgrab -d /dev/fb0 ~/fb0.png

see here

[RPi] 配對藍牙搖桿(Bluetooth Joystick)

sudo bluetoothctl
power on
agent on
scan on
找到 wireless control
connect [MAC]
trust [MAC]
quit

可以在 /dev/input/js0 看到

https://pimylifeup.com/raspberry-pi-playstation-controllers/

[RPi] 2020-02-05-raspbian-buster

https://downloads.raspberrypi.org/raspbian/release_notes.txt

幾個要注意的地方

1.  安裝後要先設定 wifi-country 才能使用
```
Wi-Fi is currently blocked by rfkill.
Use raspi-config to set the country before use.
```
快速鍵可使用 sudo raspi-config nonint do_wifi_country TW


2. 內建關掉螢幕保護程式
```
7 Advanced Options > A6 Screen Blanking > NO
```

[AWS] 使用 PHP 的 PDO 連接 RDS

看一下這篇吧
* https://docs.aws.amazon.com/zh_tw/elasticbeanstalk/latest/dg/create_deploy_PHP.rds.html

stackoverflow 說不能連，不知道是不是比較舊的文章的原因。
* https://stackoverflow.com/questions/38809418/unable-to-connect-to-aws-rds-through-pdo