[海海人生] 生老病死

剛剛得到消息，從小很照顧我的舅舅過世了，我難過的無以復加...

[RPi] Pi4 燈號對照表

https://www.raspberrypi.org/documentation/configuration/led_blink_warnings.md

[OpenCV] Learn OpenCV

 忘記哪裡看到的。

https://github.com/spmallick/learnopencv