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Re:HDMI Light V2: Open-Hardware FPGA-Based Clone of Philips ... by seltzered_ on Monday October 15, 2018 @12:39AM (#18217415)
Something similar to this was commercialized as lightpack: https://lightpack.tv

The first version of lightpack was usb driven, and it’s software (prismatik) is open source: https://github.com/woodenshark

Re:HDMI Light V2: Open-Hardware FPGA-Based Clone of Philips ... by kylegordon on Monday October 15, 2018 @04:41AM (#18218264)
I was an early backer, and my Lightpack is still working just great. I don't drive it from Prismatik though, I use Boblight... although I see that it hasn't been developed in a while.
Re:HDMI Light V2: Open-Hardware FPGA-Based Clone of Philips ... by seltzered_ on Monday October 15, 2018 @10:57AM (#18220208)
I also have the 1st-gen lightpack, but just use it as 'bias' lighting set to one static color. For some reason never got around to making it more programmable to track time-of-day.
Re:HDMI Light V2: Open-Hardware FPGA-Based Clone of Philips ... by davinic on Monday October 15, 2018 @12:42PM (#18221262)
I've also used them from https://www.dreamscreentv.com/