https://blog.wongcw.com/2020/04/21/%e7%be%85%e6%8a%80%e6%8e%a8%e8%a6%aa%e6%b0%91%e9%81%8a%e6%88%b2%e9%bc%a0%e6%a8%99g203-lightsync-rgb-%e5%94%ae%e5%83%b940%e7%be%8e%e5%85%83/