I choose to power the LED strip straight from the ESP8266 5V pin of the board, powered from the USB cable. It’s 300 LEDs in total and I was pretty sure that, even without doing the math, it ...

As usual I’ll be using a NodeMCU board (I really did order a lot of them) which uses an ESP8266, but there’s no reason this would be difficult to achieve on an Arduino-based device.