Onboard LEDs? NodeMCU's got two! – Low voltage. Mostly harmless...
Insight Into ESP8266 NodeMCU Features & Using It With Arduino IDE (Easy Steps)
ESP8266 Pinout Reference: Which GPIO pins should you use? | Random Nerd Tutorials
Introduction to the Internet of Things (IoT): Blink an external led with ESP8266
ESP8266 NodeMCU – Blinking a LED
How to Use ESP-01 ESP-01S Pins and Leds : 9 Steps - Instructables
Measure if LED is on with esp8266 and oktocoupler - ESPHome - Home Assistant Community
LED Blinking using ESP8266 - NodeMCU
NodeMcu (ESP8266) Tutorial A-02: Blinking internal LED - YouTube
ESP8266 NodeMCU pinout for Arduino IDE - Mechatronics Blog
Blink an LED with NodeMCU - esp8266 learning
Arduino-er: Control GPIOs of NodeMCU (ESP8266) with ESP8266 core for Arduino, to read Buttons and write LEDs
ESP8266 Pinout Reference: Which GPIO pins should you use? | Random Nerd Tutorials
ESP8266 NodeMCU PWM with Arduino IDE - Dim LED (Analog Output) | Random Nerd Tutorials
ESP8266 Pinout Reference: Which GPIO pins should you use? | Random Nerd Tutorials
ESP8266 - Control an External LED Over Internet - Arduino Project Hub
ESP8266 - PinOut - StudioPieters®
ESP8266 NodeMCU – Blinking a LED
Push Button and LED on a Single GPIO Pin
ESP8266 Arduino-Core Interface – LED | ArunEworld
ESP8266-01 Led Blink standalone using GPIO 2 pin - Project Guidance - Arduino Forum
Blink LED on ESP8266 | ezContents blog
ESP32 and ESP8266 GPIO Programming with MicroPython - LED Blinking
Devon P. Hubner
How to read a blink LED with nodeMcu - Project Guidance - Arduino Forum
LED Blinking using ESP8266 - NodeMCU
NodeMCU ESP8266 GPIO control web server - Hackster.io
Controlling a NeoPixel LED Strip and SD Card with a Arduino ESP8266: My Lightstick Prototype – Samposium
nodemcu - Does the Node MCU v3 (LoLin) not have a builtin led? - Arduino Stack Exchange
