Originally Posted by
Tom Tilmon
I was re checking your board photos. On your negatives to the neopixels you are running them all through only one of the pads. That is bad. You need to use at least 2 of those mosfets. You may have fried that one mosfet that both of your strips are connected to. Attach wires to the other two mosfets, the ones you haven't used already. Double strips need to divide their ampload across more mosfets. You might have hosed that single mosfet you were using.
The white flash upon boot up is normal. You can get rid of that by adding a capacitor to the stirps, but I don't. That white flash is no biggie.
Tom
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