The power LED turns on when the Arduino is powered up. From The Components of an Arduino Uno PCB -… | Instagram
![How to power an LED stripe and the Arduino Nano with the same power source - Project Guidance - Arduino Forum How to power an LED stripe and the Arduino Nano with the same power source - Project Guidance - Arduino Forum](https://europe1.discourse-cdn.com/arduino/original/4X/e/a/b/eab158a9f50fd2bafc798ddc6dfcb8d0440e222b.png)
How to power an LED stripe and the Arduino Nano with the same power source - Project Guidance - Arduino Forum
![arduino uno - Using external power supply to power leds on multiple pins (A0-A5) - Arduino Stack Exchange arduino uno - Using external power supply to power leds on multiple pins (A0-A5) - Arduino Stack Exchange](https://i.stack.imgur.com/dK6ft.jpg)
arduino uno - Using external power supply to power leds on multiple pins (A0-A5) - Arduino Stack Exchange
![Control High-powered LED Panel by Arduino Real Time With Log Data, Luminosity Sensor, LCD Display : 4 Steps (with Pictures) - Instructables Control High-powered LED Panel by Arduino Real Time With Log Data, Luminosity Sensor, LCD Display : 4 Steps (with Pictures) - Instructables](https://content.instructables.com/F54/8O4D/J9YJEKXT/F548O4DJ9YJEKXT.jpg?auto=webp)
Control High-powered LED Panel by Arduino Real Time With Log Data, Luminosity Sensor, LCD Display : 4 Steps (with Pictures) - Instructables
![Amazon.com: LAFVIN Basic Starter Kit with R3 Controller Board,LED, Resistor,Jumper Wires and Power Supply Compatible with Arduino IDE : Electronics Amazon.com: LAFVIN Basic Starter Kit with R3 Controller Board,LED, Resistor,Jumper Wires and Power Supply Compatible with Arduino IDE : Electronics](https://m.media-amazon.com/images/W/MEDIAX_792452-T2/images/I/819n1xJy46L.jpg)