![How to power an Arduino and its external devices with single USB power supply - Electrical Engineering Stack Exchange How to power an Arduino and its external devices with single USB power supply - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/fPTD5.jpg)
How to power an Arduino and its external devices with single USB power supply - Electrical Engineering Stack Exchange
![Amazon.com: HQRP 9V AC/DC Power Adapter Works with Arduino Uno Due Leonardo Mega Power Supply PSU [UL Listed] + Euro Plug Adapter : Electronics Amazon.com: HQRP 9V AC/DC Power Adapter Works with Arduino Uno Due Leonardo Mega Power Supply PSU [UL Listed] + Euro Plug Adapter : Electronics](https://m.media-amazon.com/images/I/71-uA9pHUJL.jpg)
Amazon.com: HQRP 9V AC/DC Power Adapter Works with Arduino Uno Due Leonardo Mega Power Supply PSU [UL Listed] + Euro Plug Adapter : Electronics
![All of my Arduino Uno not recognized in PC after using external power supply - IDE 1.x - Arduino Forum All of my Arduino Uno not recognized in PC after using external power supply - IDE 1.x - Arduino Forum](https://europe1.discourse-cdn.com/arduino/optimized/4X/c/5/8/c58f728ef6f630cbdbbbfa0c4a1ab04ed4d9f31f_2_1023x513.jpeg)