Lilygo® Expression Panel Blue Led Display Board For Esp32 Esp8266 Mircobit - Replacement Parts - AliExpress
LED Blinking using ESP8266 - NodeMCU
ESP8266 based board for WS2812B RBG Led control 🙂 Color changing through IoT app is also possible due the built-in Wi-Fi hardware in the ESP module. : r/esp32
control - The Blue LED of ESP8266 glows continuously when connected to 5V relay output - Electrical Engineering Stack Exchange
Pinouts | Adafruit HUZZAH ESP8266 breakout | Adafruit Learning System
ESP8266 Arduino Core | How to blink In-build Blue LED in ESP8266 Module? - YouTube
arduino uno - ESP8266 ESP-01s Not Responding, No LED Blinking, Overheating - Arduino Stack Exchange
LED display panel for ESP32 ESP8266 development board expansion Display panel blue 8X16 resolution|Parts & Accessories| - AliExpress