I have experienced this problem over the past several days where WS2812 strips will not run unless I take the microcontroller ground pin and lightly touch it to its connection. Extremely lightly. This has happened with probable 5 different strips, 3 different microcontrollers, different level shift…

WS2812s will not run unless ground is lightly touching it's connection?

LarryD November 1, 2017, 10:59pm 2

Show us a 'good' image of your wiring.

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