TheCellMC

Are you still interested in a better design ?

Same issue here

I'm having the same issue. It's totally random. I bought a new esp8266 to see if it was faulty.

@lexam79 I got this working! I was about to give up. Connect the end of your LED strip Data to the ground on your Wemos D1.

Exactly. I hope that this fixes your issue

No, I meant connect the DOUT a the very end of the strip with the GND on the controller (Wemos D1 mini in your case).