I have a 266 LED setup on the back of my 65" TV. I was just noticing that LED #266 is not lighting up. It works, but it's not being sent anything. So I wonder if I need to set the number of LEDs in the Arduino sketch to 267 because Hyperion counts the first LED as 0. I don't know if that makes sense, but it made sense to me at the time.
So I hook up my lappy to Nano and upload the Sketch with the only change being the number of LEDs. It worked, I'l like 89% sure. The LED in question is on and responding properly.
When I reconnected it to the Pi, the white balance was off. I just calibrated it and now it's really green. I go through the test colors again, and R and G have swapped. I didn't change the order in the config file or the sketch, but they are for sure swapped.
I altered the sketch to reflect the new order (previously RGB and now GRB) and did the same to the config file. Now it seems to be working.
That's strange, right?