Hi all! I have not been able to do much blinky stuff lately, but I did discover a bit more about the flickery problem I’ve been having with my reactive LED table. It seems like the LEDs are very sensitive to heat. Has anyone else seen this problem?
Here’s the setup: I have a surface with about 60 rings of 12 WS2812s all wired together. The data lines are set up so that there are logically three strips that I drive in parallel. Power is injected every 5 or 6 rings (every 60 or 70 pixels) – power does not seem to be a problem (got a beefy power supply and voltage drop is reasonable).
What I had been finding is that after some time, some of the rings would start flashing white occasionally and then freezing up. I spent a lot of time fiddling with the software and the data lines with no success.
Recently, I found that if I blow hot air on the LEDs, the same thing happens. And it doesn’t take a lot of heat to make them freeze up. When they cool down, they are fine again. On possible issue is that the rings are mounted on foam core, which is probably a great insulator, so the heat builds up a lot.
Any thoughts or recommendations?