Hi guys! I recently arrived here, I'm building an ambilight system and I need some help. I'm using Raspberry Pi 2 with LibreElec, Arduino Mega, Led strip 2812b EasyCap, and converter from HDMI to AV. I already set up the whole system, I'm able to connect to raspberry and take a screenshot on real time. Also I tested separately the strip with a little sketch and is all working. The problem comes when I connect the Raspberry and Arduino, I do not know if they are communicating at all, I do not see any response from the Leds. I think it may be because of incorrect sketch, I searched for a couple of them and none of it worked for me. I hope that you have the answer for this trouble, I'm so close to this project that I'm really exited but I got stuck on this. Thank you in advance!