Hello, sorry for this questions that may be strange. I search on Forum but I haven't found a clear answer. I use raspberry from years and now I wish to do Hyperion Led control. I will use 1.5 meter of apa102 led 30 led for meter I already own the some usb analog grabber and converters but some days ago I discover a youtube video very interesting from wich seems I can use cheper digital HDMI-usb grabber On the video it is used also Arduino. I ask it is necessary to use arduino ? Raspberry can control directly clock without use Artduino ? The power supply to led strip will be supply directly from an external power supply . I found also the following very interesting image https://github.com/Hyperion-Project/HyperBian/releases But i did not understand yet what will be the connection to APA102 if they can be direcrtly from raspberry to avoid arduino Final question , to analyze only the video signal what type of raspberry it is suggested pi0 pi2 pi3 ? My best regards, Giorgio.