I have tried a couple of NodeMCU’s and a D1 Mini and I cannot get any voltage to the data line. I have 5V going into the boards and I can access the interface. Does anyone have any suggestions on what I can look at. I have another Wled instance running on a D1 Mini and I have no problem. I’m sure it is something simple I’m missing but any help would be great. Thank you.
Поставьте между контроллером и лентой SN74AHCT125
The ESPs are 3.3v devices so your data pin will be either 3.3 or 0 at any given point in time. I assume you are testing on the pin and not 30m away at the light.
If your lights aren’t within a few centimeters of the ESP you will need a level shifter. And make sure you are on the right pin. We reference GPIO numbers and not D numbers. We have guides here Getting Started - WLED Project