1) How many LEDs in your strip
2) Amperage of 5v supply
also you don't mention what kind of LED is it? is it neopixels? I think one pixel for those takes up to 30amps?
icons wrote:I think one pixel for those takes up to 30amps?
30A is a bit much for a single Neopixel.
Neopixels can consume around 60mA at full (white) brightness, so indeed this can become a lot of current if more LED's are lit at once.
Have you tried it with a power supply that can supply, let's say, 5A at 5V (or maybe even 10A at 5V)?
When you're new, don't start with a separate ESP (ESP-01 to ESP-14) module.
Get yourself a proper development board: NodeMCU - WeMos D1 - WeMos (UNO form factor) - Witty Board
ESP power requirements are 3.3V±10%@350mA
The ESP8266 IS NOT 5V tolerant on ANY pin (see item 5.14 on page 25 of the FAQ)