Is it possible to brick a strip?
I have a couple neopixel rings that’ve been running fine for a while. I just tried out the Fire2012WithPalette example code on version 3.1, and now they’ve stopped lighting up entirely. Oddly, I can upload code and get serial data from the duino just fine. Also oddly, the Fire2012 without palette code worked ok. Any ideas?
I’m running a 3.3v board, FYI.
Check for broken or loose connections !
You say you have a couple of neopixel rings, can you swap the ring that is connected directly to the arduino, you may have damaged that 1st device!?
Hey, skipping the first ring worked!
Although I got reckless hooking it back up to check it, and borked my Arduino. At least both rings seem to work with a backup board. So that’s good.
I killed quite a few pixels myself because I ignored the advice to put a capacitor between VCC and ground. After I added one I’ve never had dead first pixels. 
No caps, no dead pixels. Shouldn’t have tried hooking up the data line to a live circuit, though
@Sam_Freeman After about $40 in damaged electronics, I stopped trying to fiddle with live circuits under power. Once I bridged a pin to a 12v power source with a screwdriver slip once…oops!
@Jon_Burroughs Hah! Done that one before, with a beefy power supply too. Also accidentally bridged a small LiPo. Wonder if anyone would read a “dumb mistakes in making” book?