[RPi] SSH Hangs After Authentication on Raspberry Pi 3

今天遇到怪事, 在 Windows 上用 putty 連線到 Pi 3, 進入到登入畫面後就停住了, 看了這篇照著修改有改善

簡單說, 修改這兩個檔案
/etc/ssh/ssh_config
/etc/ssh/sshd_config

新增一行在檔案最後面, 再重啟 sshd 服務即可
IPQoS 0x00

reference: https://expresshosting.net/ssh-hanging-authentication/

[Python] numpy操作

在處理影像時會用到 numpy 的 ndarray, python numpy笔记 寫得蠻不錯得

[Tips] 如何從google driver直接下載檔案

參考這篇：https://stackoverflow.com/questions/37453841/download-a-file-from-google-drive-using-wget

這兩篇好像不成功
https://stackoverflow.com/questions/25010369/wget-curl-large-file-from-google-drive
https://stackoverflow.com/questions/20665881/direct-download-from-google-drive-using-google-drive-api

[RPi] advmame性能調校

修改 ~/.advance/advmame.rc 裡面 video 使用 SDL 會有明顯改善

device_video sdl
device_video_output fullscreen
256x224/display_mode sdl_256x240

reference: http://www.arcadeinfo.de/archive/index.php/t-2917.html

[Tips] 錄桌面 & 影片剪輯軟體 @ Ubuntu

最近想要開始搞錄影, 會需要影片編輯, 還需要錄製桌面

錄桌面用 gtk-recordmydesktop 應該是最容易入門的, 只是還要轉檔

轉檔可以參考 Tsung 這篇：
https://blog.longwin.com.tw/2009/04/linux-record-recordmydesktop-2009/

$ mencoder out.ogv -nosound -ovc lavc -o out.avi

要有聲音的話需要安裝套件
$ sudo apt-get install flac lame
$ mencoder out.ogv -oac mp3lame -ovc lavc -o out.avi

[RPi] Joy Bonnet

今天在測試 Joy Bonnet, 不過好像上鍵壞掉, 只有下鍵可以用, 所以要稍微改一下程式

主要就是在判斷的部份要改成這樣

  if (x != 1) and not analog_states[1]:
    analog_states[1] = True
    handle_button(1001)      # send DOWN press
  if (x == 1) and analog_states[1]:
    analog_states[1] = False
    handle_button(1001)      # send DOWN release



補一下 RetroPie 的使用
https://gameroomsolutions.com/raspberry-pi-3-retropie-setup-easy-guide/
https://github.com/retropie/retropie-setup/wiki/First-Installation
sudo ~/RetroPie-Setup/retropie_setup.sh

[Python] ASCII to Binary

https://stackoverflow.com/questions/18367007/python-how-to-write-to-a-binary-file
https://stackoverflow.com/questions/25168616/writing-binary-data-to-a-file-in-python
https://stackoverflow.com/questions/34687516/how-to-read-binary-files-as-hex-in-python
* https://stackoverflow.com/questions/7396849/convert-binary-to-ascii-and-vice-versa