I have 2 ESP8266 boards running 700 leds each. The first board is running lights across the first floor of my house the the data wire is connected directly to the D4 pin on the board and all works without issue. The problem I am having is the second board is to run lights on the upper level of the…

then your data line is pulled low which prohibits booting. use some other pin (GPIO12-GPIO14 or GPIO4-GPIO5)

Long Data Wire + ESP8266 + Level Shifter

blazoncek October 12, 2021, 6:08pm 2

Add a pull-up 4k7 resistor to a D4 pin.

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