On the Uno, Nano, and Mini, the PWM pins are on D3, D5, D6 ... (found on the board's Arduino Store page). PWM pins in the diagram have the same tilde sign in front of the pin numbers. How To Use ...

Both the Arduino Nano and Uno can be powered via their integrated USB connectors. This automatically supplies regulated 5V power to the board, allowing you to use any USB-supported power source ...

PWM pins work the same way across all Arduino boards, so you don't need to go out of your way to buy a Mega if you already have a board supporting PWM. On the Uno, Nano, and Mini, the PWM pins are ...