Comparing the Arduino Uno and the Nano ... Your board will automatically receive a regulated 5V supply and power up straight ...

Then, there's the matter of the power supply. If you're simply tinkering ... you to browse through projects that only use an Arduino UNO. Another great resource for finding Arduino projects ...

He uses an Arduino Uno to control them, and a 460W computer power supply to provide the juice. The LED modules themselves are Adafruit RGB pixel strings. There’s actually three of the LED ...