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Category Archives: Technical

對 Tesla 設計的觀察

Posted on June 4, 2022November 25, 2022 by Kuan-Yi Li

2022 年 5 月的時候 Tesla 把維修手冊免費開放出來了,來大致看一下。

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qsort_r 在各大 C Standard Library 的實作狀況

Posted on February 12, 2022February 23, 2022 by Kuan-Yi Li

qsort_r 是個與 qsort 類似,但不包含在 ISO C 標準內的 function。因為非標準,不是每個 C standard library 都有實作,有實作的參數定義也不一定一致。最近發現 musl 加入了 qsort_r 的實作,就來彙整一下相關資訊。

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用公開的 Jitsi 服務也可以上遠端音樂課?

Posted on June 26, 2021June 27, 2021 by Kuan-Yi Li

前陣子看到 NiceCode 耐斯扣 NiceChord 好和弦釋出了自架 Jitsi 來上遠端音樂課的教學,勾起了我的好奇心:有沒有辦法,不修改設定檔;甚至,連自己架站都不用,就達成高音質、低延遲的目標呢?

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割字機驅動筆記

Posted on March 27, 2021May 9, 2021 by Kuan-Yi Li

修整雷射切割機的時候順便調校了一下割字機,來看一下它底層是怎麼從電腦驅動的。

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雷射切割機改機筆記

Posted on March 27, 2021October 30, 2021 by Kuan-Yi Li

最近修整了一台壞掉人家淘汰下來的雷射切割機,大致紀錄一下得到的資訊跟心得。

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Installing Docker on Debian-based Distributions

Posted on September 6, 2020October 31, 2022 by Kuan-Yi Li

Avoid both the use of obscure “convenience script” and the installation of out-of-tree kernel module.

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Installing WireGuard on Raspberry Pi OS Buster

Posted on August 8, 2020August 23, 2021 by Kuan-Yi Li
Jump to the last step! WireGuard is included in official suite of Raspberry Pi OS Buster since mid February, 2021.

Most of the instructions out there are far from something I would call “best practice”, so I wrote one my own.

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Installing Linux Kernel From Debian Backports

Posted on July 10, 2020August 23, 2021 by Kuan-Yi Li

Debian buster-backports started to serve kernel 5.6+ around mid June, 2020. By installing Linux kernel from the suite, we’ll have in-tree WireGuard kernel module and some more up-to-date drivers on Debian Buster, all officially signed.

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Human-Readable DHCP Options for DNSMASQ

Posted on June 30, 2020June 16, 2021 by Kuan-Yi Li

Cheatsheet to a more maintainable configuration.

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Things About ClearFog Base/Pro

Posted on March 21, 2020April 12, 2020 by Kuan-Yi Li

Must-Knows

  • eMMC prevents the usage of booting from microSD. Stay away from eMMC variants unless there is a special reason.
  • Generates a lot of heat, should always operate with a cooler and replace thermal pad with thermal paste.

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Recent Posts

  • 對 Tesla 設計的觀察
  • qsort_r 在各大 C Standard Library 的實作狀況
  • 用公開的 Jitsi 服務也可以上遠端音樂課?
  • 割字機驅動筆記
  • 雷射切割機改機筆記
  • 質與量的兩難
  • 珍惜生命,遠離 Cooler Master
  • Installing Docker on Debian-based Distributions
  • Installing WireGuard on Raspberry Pi OS Buster
  • Installing Linux Kernel From Debian Backports

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